[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/settings/v1alpha1/doc.go b/vendor/k8s.io/api/settings/v1alpha1/doc.go
index 9126211..60066bb 100644
--- a/vendor/k8s.io/api/settings/v1alpha1/doc.go
+++ b/vendor/k8s.io/api/settings/v1alpha1/doc.go
@@ -15,6 +15,7 @@
 */
 
 // +k8s:deepcopy-gen=package
+// +k8s:protobuf-gen=package
 // +k8s:openapi-gen=true
 
 // +groupName=settings.k8s.io
diff --git a/vendor/k8s.io/api/settings/v1alpha1/generated.proto b/vendor/k8s.io/api/settings/v1alpha1/generated.proto
index d5534c4..db1ec93 100644
--- a/vendor/k8s.io/api/settings/v1alpha1/generated.proto
+++ b/vendor/k8s.io/api/settings/v1alpha1/generated.proto
@@ -42,7 +42,7 @@
 // PodPresetList is a list of PodPreset objects.
 message PodPresetList {
   // Standard list metadata.
-  // More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata
+  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
   // +optional
   optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
 
diff --git a/vendor/k8s.io/api/settings/v1alpha1/types.go b/vendor/k8s.io/api/settings/v1alpha1/types.go
index 506aacf..8cc99d4 100644
--- a/vendor/k8s.io/api/settings/v1alpha1/types.go
+++ b/vendor/k8s.io/api/settings/v1alpha1/types.go
@@ -61,7 +61,7 @@
 type PodPresetList struct {
 	metav1.TypeMeta `json:",inline"`
 	// Standard list metadata.
-	// More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata
+	// More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata
 	// +optional
 	metav1.ListMeta `json:"metadata,omitempty" protobuf:"bytes,1,opt,name=metadata"`
 
diff --git a/vendor/k8s.io/api/settings/v1alpha1/types_swagger_doc_generated.go b/vendor/k8s.io/api/settings/v1alpha1/types_swagger_doc_generated.go
index 508c452..0501e0a 100644
--- a/vendor/k8s.io/api/settings/v1alpha1/types_swagger_doc_generated.go
+++ b/vendor/k8s.io/api/settings/v1alpha1/types_swagger_doc_generated.go
@@ -37,7 +37,7 @@
 
 var map_PodPresetList = map[string]string{
 	"":         "PodPresetList is a list of PodPreset objects.",
-	"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 a list of schema objects.",
 }
 
diff --git a/vendor/k8s.io/api/settings/v1alpha1/zz_generated.deepcopy.go b/vendor/k8s.io/api/settings/v1alpha1/zz_generated.deepcopy.go
index 6397a88..ed6c31a 100644
--- a/vendor/k8s.io/api/settings/v1alpha1/zz_generated.deepcopy.go
+++ b/vendor/k8s.io/api/settings/v1alpha1/zz_generated.deepcopy.go
@@ -56,7 +56,7 @@
 func (in *PodPresetList) DeepCopyInto(out *PodPresetList) {
 	*out = *in
 	out.TypeMeta = in.TypeMeta
-	out.ListMeta = in.ListMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
 	if in.Items != nil {
 		in, out := &in.Items, &out.Items
 		*out = make([]PodPreset, len(*in))