[VOL-1866] Changed module dependency to v12.0.0 of k8s client-go and v1.15.4 of k8s api/apimachinery in sync with other voltha components

Had to use pseudo-version corresponding to v12.0.0 of k8s client-go
because golang proxy is no longer serving the modules not complying
to Semantic Import Versioning rules including client-go v12.0.0.
Refer to https://github.com/kubernetes/client-go/issues/631 and
https://github.com/golang/go/issues/33558

Change-Id: I2e558bab7f0702f230761319eb5392a7d0532ea3
diff --git a/vendor/k8s.io/api/scheduling/v1beta1/types_swagger_doc_generated.go b/vendor/k8s.io/api/scheduling/v1beta1/types_swagger_doc_generated.go
index c18f54a..ffded9d 100644
--- a/vendor/k8s.io/api/scheduling/v1beta1/types_swagger_doc_generated.go
+++ b/vendor/k8s.io/api/scheduling/v1beta1/types_swagger_doc_generated.go
@@ -28,11 +28,12 @@
 
 // AUTO-GENERATED FUNCTIONS START HERE. DO NOT EDIT.
 var map_PriorityClass = map[string]string{
-	"":              "PriorityClass defines mapping from a priority class name to the priority integer value. The value can be any valid integer.",
-	"metadata":      "Standard object's metadata. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata",
-	"value":         "The value of this priority class. This is the actual priority that pods receive when they have the name of this class in their pod spec.",
-	"globalDefault": "globalDefault specifies whether this PriorityClass should be considered as the default priority for pods that do not have any priority class. Only one PriorityClass can be marked as `globalDefault`. However, if more than one PriorityClasses exists with their `globalDefault` field set to true, the smallest value of such global default PriorityClasses will be used as the default priority.",
-	"description":   "description is an arbitrary string that usually provides guidelines on when this priority class should be used.",
+	"":                 "DEPRECATED - This group version of PriorityClass is deprecated by scheduling.k8s.io/v1/PriorityClass. PriorityClass defines mapping from a priority class name to the priority integer value. The value can be any valid integer.",
+	"metadata":         "Standard object's metadata. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata",
+	"value":            "The value of this priority class. This is the actual priority that pods receive when they have the name of this class in their pod spec.",
+	"globalDefault":    "globalDefault specifies whether this PriorityClass should be considered as the default priority for pods that do not have any priority class. Only one PriorityClass can be marked as `globalDefault`. However, if more than one PriorityClasses exists with their `globalDefault` field set to true, the smallest value of such global default PriorityClasses will be used as the default priority.",
+	"description":      "description is an arbitrary string that usually provides guidelines on when this priority class should be used.",
+	"preemptionPolicy": "PreemptionPolicy is the Policy for preempting pods with lower priority. One of Never, PreemptLowerPriority. Defaults to PreemptLowerPriority if unset. This field is alpha-level and is only honored by servers that enable the NonPreemptingPriority feature.",
 }
 
 func (PriorityClass) SwaggerDoc() map[string]string {
@@ -41,7 +42,7 @@
 
 var map_PriorityClassList = map[string]string{
 	"":         "PriorityClassList is a collection of priority classes.",
-	"metadata": "Standard list metadata More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata",
+	"metadata": "Standard list metadata More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata",
 	"items":    "items is the list of PriorityClasses",
 }