rebase: update kubernetes to v1.25.0

update kubernetes to latest v1.25.0
release.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/k8s.io/pod-security-admission/policy/check_seLinuxOptions.go

@@ -0,0 +1,159 @@
+/*
+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 policy
+
+import (
+	"fmt"
+	"strings"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/sets"
+	"k8s.io/pod-security-admission/api"
+)
+
+/*
+Setting the SELinux type is restricted, and setting a custom SELinux user or role option is forbidden.
+
+**Restricted Fields:**
+spec.securityContext.seLinuxOptions.type
+spec.containers[*].securityContext.seLinuxOptions.type
+spec.initContainers[*].securityContext.seLinuxOptions.type
+
+**Allowed Values:**
+undefined/empty
+container_t
+container_init_t
+container_kvm_t
+
+**Restricted Fields:**
+spec.securityContext.seLinuxOptions.user
+spec.containers[*].securityContext.seLinuxOptions.user
+spec.initContainers[*].securityContext.seLinuxOptions.user
+spec.securityContext.seLinuxOptions.role
+spec.containers[*].securityContext.seLinuxOptions.role
+spec.initContainers[*].securityContext.seLinuxOptions.role
+
+**Allowed Values:** undefined/empty
+*/
+
+func init() {
+	addCheck(CheckSELinuxOptions)
+}
+
+// CheckSELinuxOptions returns a baseline level check
+// that limits seLinuxOptions type, user, and role values in 1.0+
+func CheckSELinuxOptions() Check {
+	return Check{
+		ID:    "seLinuxOptions",
+		Level: api.LevelBaseline,
+		Versions: []VersionedCheck{
+			{
+				MinimumVersion: api.MajorMinorVersion(1, 0),
+				CheckPod:       seLinuxOptions_1_0,
+			},
+		},
+	}
+}
+
+var (
+	selinux_allowed_types_1_0 = sets.NewString("", "container_t", "container_init_t", "container_kvm_t")
+)
+
+func seLinuxOptions_1_0(podMetadata *metav1.ObjectMeta, podSpec *corev1.PodSpec) CheckResult {
+	var (
+		// sources that set bad seLinuxOptions
+		badSetters []string
+
+		// invalid type values set
+		badTypes = sets.NewString()
+		// was user set?
+		setUser = false
+		// was role set?
+		setRole = false
+	)
+
+	validSELinuxOptions := func(opts *corev1.SELinuxOptions) bool {
+		valid := true
+		if !selinux_allowed_types_1_0.Has(opts.Type) {
+			valid = false
+			badTypes.Insert(opts.Type)
+		}
+		if len(opts.User) > 0 {
+			valid = false
+			setUser = true
+		}
+		if len(opts.Role) > 0 {
+			valid = false
+			setRole = true
+		}
+		return valid
+	}
+
+	if podSpec.SecurityContext != nil && podSpec.SecurityContext.SELinuxOptions != nil {
+		if !validSELinuxOptions(podSpec.SecurityContext.SELinuxOptions) {
+			badSetters = append(badSetters, "pod")
+		}
+	}
+
+	var badContainers []string
+	visitContainers(podSpec, func(container *corev1.Container) {
+		if container.SecurityContext != nil && container.SecurityContext.SELinuxOptions != nil {
+			if !validSELinuxOptions(container.SecurityContext.SELinuxOptions) {
+				badContainers = append(badContainers, container.Name)
+			}
+		}
+	})
+	if len(badContainers) > 0 {
+		badSetters = append(
+			badSetters,
+			fmt.Sprintf(
+				"%s %s",
+				pluralize("container", "containers", len(badContainers)),
+				joinQuote(badContainers),
+			),
+		)
+	}
+
+	if len(badSetters) > 0 {
+		var badData []string
+		if len(badTypes) > 0 {
+			badData = append(badData, fmt.Sprintf(
+				"%s %s",
+				pluralize("type", "types", len(badTypes)),
+				joinQuote(badTypes.List()),
+			))
+			if setUser {
+				badData = append(badData, "user may not be set")
+			}
+			if setRole {
+				badData = append(badData, "role may not be set")
+			}
+		}
+
+		return CheckResult{
+			Allowed:         false,
+			ForbiddenReason: "seLinuxOptions",
+			ForbiddenDetail: fmt.Sprintf(
+				`%s set forbidden securityContext.seLinuxOptions: %s`,
+				strings.Join(badSetters, " and "),
+				strings.Join(badData, "; "),
+			),
+		}
+	}
+	return CheckResult{Allowed: true}
+}