rebase: update controller-runtime package to v0.9.2

This commit updates controller-runtime to v0.9.2 and
makes changes in persistentvolume.go to add context to
various functions and function calls made here instead of
context.TODO().

Signed-off-by: Rakshith R <rar@redhat.com>

vendor/sigs.k8s.io/controller-runtime/pkg/scheme/scheme.go

@@ -0,0 +1,94 @@
+/*
+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 scheme contains utilities for gradually building Schemes,
+// which contain information associating Go types with Kubernetes
+// groups, versions, and kinds.
+//
+// Each API group should define a utility function
+// called AddToScheme for adding its types to a Scheme:
+//
+//  // in package myapigroupv1...
+//  var (
+//  	SchemeGroupVersion = schema.GroupVersion{Group: "my.api.group", Version: "v1"}
+//  	SchemeBuilder = &scheme.Builder{GroupVersion: SchemeGroupVersion}
+//  	AddToScheme = SchemeBuilder.AddToScheme
+//  )
+//
+//  func init() {
+//  	SchemeBuilder.Register(&MyType{}, &MyTypeList)
+//  }
+//  var (
+//  	scheme *runtime.Scheme = runtime.NewScheme()
+//  )
+//
+// This also true of the built-in Kubernetes types.  Then, in the entrypoint for
+// your manager, assemble the scheme containing exactly the types you need,
+// panicing if scheme registration failed. For instance, if our controller needs
+// types from the core/v1 API group (e.g. Pod), plus types from my.api.group/v1:
+//
+//  func init() {
+//  	utilruntime.Must(myapigroupv1.AddToScheme(scheme))
+//  	utilruntime.Must(kubernetesscheme.AddToScheme(scheme))
+//  }
+//
+//  func main() {
+//  	mgr := controllers.NewManager(context.Background(), controllers.GetConfigOrDie(), manager.Options{
+//  		Scheme: scheme,
+//  	})
+//  	// ...
+//  }
+//
+package scheme
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+// Builder builds a new Scheme for mapping go types to Kubernetes GroupVersionKinds.
+type Builder struct {
+	GroupVersion schema.GroupVersion
+	runtime.SchemeBuilder
+}
+
+// Register adds one or more objects to the SchemeBuilder so they can be added to a Scheme.  Register mutates bld.
+func (bld *Builder) Register(object ...runtime.Object) *Builder {
+	bld.SchemeBuilder.Register(func(scheme *runtime.Scheme) error {
+		scheme.AddKnownTypes(bld.GroupVersion, object...)
+		metav1.AddToGroupVersion(scheme, bld.GroupVersion)
+		return nil
+	})
+	return bld
+}
+
+// RegisterAll registers all types from the Builder argument.  RegisterAll mutates bld.
+func (bld *Builder) RegisterAll(b *Builder) *Builder {
+	bld.SchemeBuilder = append(bld.SchemeBuilder, b.SchemeBuilder...)
+	return bld
+}
+
+// AddToScheme adds all registered types to s.
+func (bld *Builder) AddToScheme(s *runtime.Scheme) error {
+	return bld.SchemeBuilder.AddToScheme(s)
+}
+
+// Build returns a new Scheme containing the registered types.
+func (bld *Builder) Build() (*runtime.Scheme, error) {
+	s := runtime.NewScheme()
+	return s, bld.AddToScheme(s)
+}