Merge pull request #54463 from saad-ali/volumeAttachmentAPI

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Introduce new `VolumeAttachment` API Object

**What this PR does / why we need it**:

Introduce a new `VolumeAttachment` API Object. This object will be used by the CSI volume plugin to enable external attachers (see design [here](https://github.com/kubernetes/community/pull/1258). In the future, existing volume plugins can be refactored to use this object as well.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*:  Part of issue https://github.com/kubernetes/features/issues/178

**Special notes for your reviewer**:
None

**Release note**:

```release-note
NONE
```

Kubernetes-commit: ebe8ea73fd1a961779242dfbb629befa153e96fc

vendor/k8s.io/api/batch/v2alpha1/BUILD

@@ -21,7 +21,6 @@ go_library(
         "//vendor/k8s.io/api/batch/v1:go_default_library",
         "//vendor/k8s.io/api/core/v1:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
-        "//vendor/k8s.io/apimachinery/pkg/conversion:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
     ],

vendor/k8s.io/api/batch/v2alpha1/doc.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// +k8s:deepcopy-gen=package,register
+// +k8s:deepcopy-gen=package
 // +k8s:openapi-gen=true
 
 package v2alpha1

vendor/k8s.io/api/batch/v2alpha1/generated.proto

@@ -71,7 +71,10 @@ message CronJobSpec {
   optional int64 startingDeadlineSeconds = 2;
 
   // Specifies how to treat concurrent executions of a Job.
-  // Defaults to Allow.
+  // Valid values are:
+  // - "Allow" (default): allows CronJobs to run concurrently;
+  // - "Forbid": forbids concurrent runs, skipping next run if previous run hasn't finished yet;
+  // - "Replace": cancels currently running job and replaces it with a new one
   // +optional
   optional string concurrencyPolicy = 3;
 

vendor/k8s.io/api/batch/v2alpha1/types.go

@@ -100,7 +100,10 @@ type CronJobSpec struct {
 	StartingDeadlineSeconds *int64 `json:"startingDeadlineSeconds,omitempty" protobuf:"varint,2,opt,name=startingDeadlineSeconds"`
 
 	// Specifies how to treat concurrent executions of a Job.
-	// Defaults to Allow.
+	// Valid values are:
+	// - "Allow" (default): allows CronJobs to run concurrently;
+	// - "Forbid": forbids concurrent runs, skipping next run if previous run hasn't finished yet;
+	// - "Replace": cancels currently running job and replaces it with a new one
 	// +optional
 	ConcurrencyPolicy ConcurrencyPolicy `json:"concurrencyPolicy,omitempty" protobuf:"bytes,3,opt,name=concurrencyPolicy,casttype=ConcurrencyPolicy"`
 

vendor/k8s.io/api/batch/v2alpha1/types_swagger_doc_generated.go

@@ -52,7 +52,7 @@ var map_CronJobSpec = map[string]string{
 	"":                           "CronJobSpec describes how the job execution will look like and when it will actually run.",
 	"schedule":                   "The schedule in Cron format, see https://en.wikipedia.org/wiki/Cron.",
 	"startingDeadlineSeconds":    "Optional deadline in seconds for starting the job if it misses scheduled time for any reason.  Missed jobs executions will be counted as failed ones.",
-	"concurrencyPolicy":          "Specifies how to treat concurrent executions of a Job. Defaults to Allow.",
+	"concurrencyPolicy":          "Specifies how to treat concurrent executions of a Job. Valid values are: - \"Allow\" (default): allows CronJobs to run concurrently; - \"Forbid\": forbids concurrent runs, skipping next run if previous run hasn't finished yet; - \"Replace\": cancels currently running job and replaces it with a new one",
 	"suspend":                    "This flag tells the controller to suspend subsequent executions, it does not apply to already started executions.  Defaults to false.",
 	"jobTemplate":                "Specifies the job that will be created when executing a CronJob.",
 	"successfulJobsHistoryLimit": "The number of successful finished jobs to retain. This is a pointer to distinguish between explicit zero and not specified.",

vendor/k8s.io/api/batch/v2alpha1/zz_generated.deepcopy.go

@@ -23,48 +23,9 @@ package v2alpha1
 import (
 	v1 "k8s.io/api/core/v1"
 	meta_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	conversion "k8s.io/apimachinery/pkg/conversion"
 	runtime "k8s.io/apimachinery/pkg/runtime"
-	reflect "reflect"
 )
 
-func init() {
-	SchemeBuilder.Register(RegisterDeepCopies)
-}
-
-// RegisterDeepCopies adds deep-copy functions to the given scheme. Public
-// to allow building arbitrary schemes.
-//
-// Deprecated: deepcopy registration will go away when static deepcopy is fully implemented.
-func RegisterDeepCopies(scheme *runtime.Scheme) error {
-	return scheme.AddGeneratedDeepCopyFuncs(
-		conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error {
-			in.(*CronJob).DeepCopyInto(out.(*CronJob))
-			return nil
-		}, InType: reflect.TypeOf(&CronJob{})},
-		conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error {
-			in.(*CronJobList).DeepCopyInto(out.(*CronJobList))
-			return nil
-		}, InType: reflect.TypeOf(&CronJobList{})},
-		conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error {
-			in.(*CronJobSpec).DeepCopyInto(out.(*CronJobSpec))
-			return nil
-		}, InType: reflect.TypeOf(&CronJobSpec{})},
-		conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error {
-			in.(*CronJobStatus).DeepCopyInto(out.(*CronJobStatus))
-			return nil
-		}, InType: reflect.TypeOf(&CronJobStatus{})},
-		conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error {
-			in.(*JobTemplate).DeepCopyInto(out.(*JobTemplate))
-			return nil
-		}, InType: reflect.TypeOf(&JobTemplate{})},
-		conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error {
-			in.(*JobTemplateSpec).DeepCopyInto(out.(*JobTemplateSpec))
-			return nil
-		}, InType: reflect.TypeOf(&JobTemplateSpec{})},
-	)
-}
-
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *CronJob) DeepCopyInto(out *CronJob) {
 	*out = *in