rebase: bump k8s.io/kubernetes from 1.26.2 to 1.27.2

Bumps [k8s.io/kubernetes](https://github.com/kubernetes/kubernetes) from 1.26.2 to 1.27.2.
- [Release notes](https://github.com/kubernetes/kubernetes/releases)
- [Commits](https://github.com/kubernetes/kubernetes/compare/v1.26.2...v1.27.2)

---
updated-dependencies:
- dependency-name: k8s.io/kubernetes
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/k8s.io/apiserver/pkg/authorization/authorizerfactory/builtin.go

@@ -0,0 +1,95 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package authorizerfactory
+
+import (
+	"context"
+	"errors"
+
+	"k8s.io/apiserver/pkg/authentication/user"
+	"k8s.io/apiserver/pkg/authorization/authorizer"
+)
+
+// alwaysAllowAuthorizer is an implementation of authorizer.Attributes
+// which always says yes to an authorization request.
+// It is useful in tests and when using kubernetes in an open manner.
+type alwaysAllowAuthorizer struct{}
+
+func (alwaysAllowAuthorizer) Authorize(ctx context.Context, a authorizer.Attributes) (authorized authorizer.Decision, reason string, err error) {
+	return authorizer.DecisionAllow, "", nil
+}
+
+func (alwaysAllowAuthorizer) RulesFor(user user.Info, namespace string) ([]authorizer.ResourceRuleInfo, []authorizer.NonResourceRuleInfo, bool, error) {
+	return []authorizer.ResourceRuleInfo{
+			&authorizer.DefaultResourceRuleInfo{
+				Verbs:     []string{"*"},
+				APIGroups: []string{"*"},
+				Resources: []string{"*"},
+			},
+		}, []authorizer.NonResourceRuleInfo{
+			&authorizer.DefaultNonResourceRuleInfo{
+				Verbs:           []string{"*"},
+				NonResourceURLs: []string{"*"},
+			},
+		}, false, nil
+}
+
+func NewAlwaysAllowAuthorizer() *alwaysAllowAuthorizer {
+	return new(alwaysAllowAuthorizer)
+}
+
+// alwaysDenyAuthorizer is an implementation of authorizer.Attributes
+// which always says no to an authorization request.
+// It is useful in unit tests to force an operation to be forbidden.
+type alwaysDenyAuthorizer struct{}
+
+func (alwaysDenyAuthorizer) Authorize(ctx context.Context, a authorizer.Attributes) (decision authorizer.Decision, reason string, err error) {
+	return authorizer.DecisionNoOpinion, "Everything is forbidden.", nil
+}
+
+func (alwaysDenyAuthorizer) RulesFor(user user.Info, namespace string) ([]authorizer.ResourceRuleInfo, []authorizer.NonResourceRuleInfo, bool, error) {
+	return []authorizer.ResourceRuleInfo{}, []authorizer.NonResourceRuleInfo{}, false, nil
+}
+
+func NewAlwaysDenyAuthorizer() *alwaysDenyAuthorizer {
+	return new(alwaysDenyAuthorizer)
+}
+
+type privilegedGroupAuthorizer struct {
+	groups []string
+}
+
+func (r *privilegedGroupAuthorizer) Authorize(ctx context.Context, attr authorizer.Attributes) (authorizer.Decision, string, error) {
+	if attr.GetUser() == nil {
+		return authorizer.DecisionNoOpinion, "Error", errors.New("no user on request.")
+	}
+	for _, attr_group := range attr.GetUser().GetGroups() {
+		for _, priv_group := range r.groups {
+			if priv_group == attr_group {
+				return authorizer.DecisionAllow, "", nil
+			}
+		}
+	}
+	return authorizer.DecisionNoOpinion, "", nil
+}
+
+// NewPrivilegedGroups is for use in loopback scenarios
+func NewPrivilegedGroups(groups ...string) *privilegedGroupAuthorizer {
+	return &privilegedGroupAuthorizer{
+		groups: groups,
+	}
+}

vendor/k8s.io/apiserver/pkg/authorization/authorizerfactory/delegating.go

@@ -0,0 +1,62 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package authorizerfactory
+
+import (
+	"errors"
+	"time"
+
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/apiserver/pkg/authorization/authorizer"
+	"k8s.io/apiserver/plugin/pkg/authorizer/webhook"
+	authorizationclient "k8s.io/client-go/kubernetes/typed/authorization/v1"
+)
+
+// DelegatingAuthorizerConfig is the minimal configuration needed to create an authenticator
+// built to delegate authorization to a kube API server
+type DelegatingAuthorizerConfig struct {
+	SubjectAccessReviewClient authorizationclient.AuthorizationV1Interface
+
+	// AllowCacheTTL is the length of time that a successful authorization response will be cached
+	AllowCacheTTL time.Duration
+
+	// DenyCacheTTL is the length of time that an unsuccessful authorization response will be cached.
+	// You generally want more responsive, "deny, try again" flows.
+	DenyCacheTTL time.Duration
+
+	// WebhookRetryBackoff specifies the backoff parameters for the authorization webhook retry logic.
+	// This allows us to configure the sleep time at each iteration and the maximum number of retries allowed
+	// before we fail the webhook call in order to limit the fan out that ensues when the system is degraded.
+	WebhookRetryBackoff *wait.Backoff
+}
+
+func (c DelegatingAuthorizerConfig) New() (authorizer.Authorizer, error) {
+	if c.WebhookRetryBackoff == nil {
+		return nil, errors.New("retry backoff parameters for delegating authorization webhook has not been specified")
+	}
+
+	return webhook.NewFromInterface(
+		c.SubjectAccessReviewClient,
+		c.AllowCacheTTL,
+		c.DenyCacheTTL,
+		*c.WebhookRetryBackoff,
+		webhook.AuthorizerMetrics{
+			RecordRequestTotal:   RecordRequestTotal,
+			RecordRequestLatency: RecordRequestLatency,
+		},
+	)
+}

vendor/k8s.io/apiserver/pkg/authorization/authorizerfactory/metrics.go

@@ -0,0 +1,69 @@
+/*
+Copyright 2021 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package authorizerfactory
+
+import (
+	"context"
+
+	compbasemetrics "k8s.io/component-base/metrics"
+	"k8s.io/component-base/metrics/legacyregistry"
+)
+
+type registerables []compbasemetrics.Registerable
+
+// init registers all metrics
+func init() {
+	for _, metric := range metrics {
+		legacyregistry.MustRegister(metric)
+	}
+}
+
+var (
+	requestTotal = compbasemetrics.NewCounterVec(
+		&compbasemetrics.CounterOpts{
+			Name:           "apiserver_delegated_authz_request_total",
+			Help:           "Number of HTTP requests partitioned by status code.",
+			StabilityLevel: compbasemetrics.ALPHA,
+		},
+		[]string{"code"},
+	)
+
+	requestLatency = compbasemetrics.NewHistogramVec(
+		&compbasemetrics.HistogramOpts{
+			Name:           "apiserver_delegated_authz_request_duration_seconds",
+			Help:           "Request latency in seconds. Broken down by status code.",
+			Buckets:        []float64{0.25, 0.5, 0.7, 1, 1.5, 3, 5, 10},
+			StabilityLevel: compbasemetrics.ALPHA,
+		},
+		[]string{"code"},
+	)
+
+	metrics = registerables{
+		requestTotal,
+		requestLatency,
+	}
+)
+
+// RecordRequestTotal increments the total number of requests for the delegated authorization.
+func RecordRequestTotal(ctx context.Context, code string) {
+	requestTotal.WithContext(ctx).WithLabelValues(code).Add(1)
+}
+
+// RecordRequestLatency measures request latency in seconds for the delegated authorization. Broken down by status code.
+func RecordRequestLatency(ctx context.Context, code string, latency float64) {
+	requestLatency.WithContext(ctx).WithLabelValues(code).Observe(latency)
+}

vendor/k8s.io/apiserver/pkg/authorization/path/doc.go

@@ -0,0 +1,18 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package path contains an authorizer that allows certain paths and path prefixes.
+package path // import "k8s.io/apiserver/pkg/authorization/path"

vendor/k8s.io/apiserver/pkg/authorization/path/path.go

@@ -0,0 +1,68 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package path
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"k8s.io/apimachinery/pkg/util/sets"
+	"k8s.io/apiserver/pkg/authorization/authorizer"
+)
+
+// NewAuthorizer returns an authorizer which accepts a given set of paths.
+// Each path is either a fully matching path or it ends in * in case a prefix match is done. A leading / is optional.
+func NewAuthorizer(alwaysAllowPaths []string) (authorizer.Authorizer, error) {
+	var prefixes []string
+	paths := sets.NewString()
+	for _, p := range alwaysAllowPaths {
+		p = strings.TrimPrefix(p, "/")
+		if len(p) == 0 {
+			// matches "/"
+			paths.Insert(p)
+			continue
+		}
+		if strings.ContainsRune(p[:len(p)-1], '*') {
+			return nil, fmt.Errorf("only trailing * allowed in %q", p)
+		}
+		if strings.HasSuffix(p, "*") {
+			prefixes = append(prefixes, p[:len(p)-1])
+		} else {
+			paths.Insert(p)
+		}
+	}
+
+	return authorizer.AuthorizerFunc(func(ctx context.Context, a authorizer.Attributes) (authorizer.Decision, string, error) {
+		if a.IsResourceRequest() {
+			return authorizer.DecisionNoOpinion, "", nil
+		}
+
+		pth := strings.TrimPrefix(a.GetPath(), "/")
+		if paths.Has(pth) {
+			return authorizer.DecisionAllow, "", nil
+		}
+
+		for _, prefix := range prefixes {
+			if strings.HasPrefix(pth, prefix) {
+				return authorizer.DecisionAllow, "", nil
+			}
+		}
+
+		return authorizer.DecisionNoOpinion, "", nil
+	}), nil
+}

vendor/k8s.io/apiserver/pkg/authorization/union/union.go

@@ -0,0 +1,106 @@
+/*
+Copyright 2014 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package union implements an authorizer that combines multiple subauthorizer.
+// The union authorizer iterates over each subauthorizer and returns the first
+// decision that is either an Allow decision or a Deny decision. If a
+// subauthorizer returns a NoOpinion, then the union authorizer moves onto the
+// next authorizer or, if the subauthorizer was the last authorizer, returns
+// NoOpinion as the aggregate decision. I.e. union authorizer creates an
+// aggregate decision and supports short-circuit allows and denies from
+// subauthorizers.
+package union
+
+import (
+	"context"
+	"strings"
+
+	utilerrors "k8s.io/apimachinery/pkg/util/errors"
+	"k8s.io/apiserver/pkg/authentication/user"
+	"k8s.io/apiserver/pkg/authorization/authorizer"
+)
+
+// unionAuthzHandler authorizer against a chain of authorizer.Authorizer
+type unionAuthzHandler []authorizer.Authorizer
+
+// New returns an authorizer that authorizes against a chain of authorizer.Authorizer objects
+func New(authorizationHandlers ...authorizer.Authorizer) authorizer.Authorizer {
+	return unionAuthzHandler(authorizationHandlers)
+}
+
+// Authorizes against a chain of authorizer.Authorizer objects and returns nil if successful and returns error if unsuccessful
+func (authzHandler unionAuthzHandler) Authorize(ctx context.Context, a authorizer.Attributes) (authorizer.Decision, string, error) {
+	var (
+		errlist    []error
+		reasonlist []string
+	)
+
+	for _, currAuthzHandler := range authzHandler {
+		decision, reason, err := currAuthzHandler.Authorize(ctx, a)
+
+		if err != nil {
+			errlist = append(errlist, err)
+		}
+		if len(reason) != 0 {
+			reasonlist = append(reasonlist, reason)
+		}
+		switch decision {
+		case authorizer.DecisionAllow, authorizer.DecisionDeny:
+			return decision, reason, err
+		case authorizer.DecisionNoOpinion:
+			// continue to the next authorizer
+		}
+	}
+
+	return authorizer.DecisionNoOpinion, strings.Join(reasonlist, "\n"), utilerrors.NewAggregate(errlist)
+}
+
+// unionAuthzRulesHandler authorizer against a chain of authorizer.RuleResolver
+type unionAuthzRulesHandler []authorizer.RuleResolver
+
+// NewRuleResolvers returns an authorizer that authorizes against a chain of authorizer.Authorizer objects
+func NewRuleResolvers(authorizationHandlers ...authorizer.RuleResolver) authorizer.RuleResolver {
+	return unionAuthzRulesHandler(authorizationHandlers)
+}
+
+// RulesFor against a chain of authorizer.RuleResolver objects and returns nil if successful and returns error if unsuccessful
+func (authzHandler unionAuthzRulesHandler) RulesFor(user user.Info, namespace string) ([]authorizer.ResourceRuleInfo, []authorizer.NonResourceRuleInfo, bool, error) {
+	var (
+		errList              []error
+		resourceRulesList    []authorizer.ResourceRuleInfo
+		nonResourceRulesList []authorizer.NonResourceRuleInfo
+	)
+	incompleteStatus := false
+
+	for _, currAuthzHandler := range authzHandler {
+		resourceRules, nonResourceRules, incomplete, err := currAuthzHandler.RulesFor(user, namespace)
+
+		if incomplete {
+			incompleteStatus = true
+		}
+		if err != nil {
+			errList = append(errList, err)
+		}
+		if len(resourceRules) > 0 {
+			resourceRulesList = append(resourceRulesList, resourceRules...)
+		}
+		if len(nonResourceRules) > 0 {
+			nonResourceRulesList = append(nonResourceRulesList, nonResourceRules...)
+		}
+	}
+
+	return resourceRulesList, nonResourceRulesList, incompleteStatus, utilerrors.NewAggregate(errList)
+}