Merge pull request #62893 from hzxuzhonghu/mark-APIServiceSpec.CABundle-optional

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>.

mark APIServiceSpec.CABundle optional

xref: https://github.com/kubernetes/kubernetes/issues/60690#issuecomment-382842852
mark the caBundle field optional so openapi is accurate

**Release note**:

```release-note
NONE
```

api/openapi-spec/swagger.json

@@ -85393,7 +85393,6 @@
     "description": "APIServiceSpec contains information for locating and communicating with a server. Only https is supported, though you are able to disable certificate verification.",
     "required": [
      "service",
-     "caBundle",
      "groupPriorityMinimum",
      "versionPriority"
     ],
@@ -85539,7 +85538,6 @@
     "description": "APIServiceSpec contains information for locating and communicating with a server. Only https is supported, though you are able to disable certificate verification.",
     "required": [
      "service",
-     "caBundle",
      "groupPriorityMinimum",
      "versionPriority"
     ],

staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/types.go

@@ -53,6 +53,7 @@ type APIServiceSpec struct {
 	// This is strongly discouraged.  You should use the CABundle instead.
 	InsecureSkipTLSVerify bool
 	// CABundle is a PEM encoded CA bundle which will be used to validate an API server's serving certificate.
+	// +optional
 	CABundle []byte
 
 	// GroupPriorityMininum is the priority this group should have at least. Higher priority means that the group is preferred by clients over lower priority ones.

staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/generated.proto

@@ -89,6 +89,7 @@ message APIServiceSpec {
   optional bool insecureSkipTLSVerify = 4;
 
   // CABundle is a PEM encoded CA bundle which will be used to validate an API server's serving certificate.
+  // +optional
   optional bytes caBundle = 5;
 
   // GroupPriorityMininum is the priority this group should have at least. Higher priority means that the group is preferred by clients over lower priority ones.

staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1/types.go

@@ -53,7 +53,8 @@ type APIServiceSpec struct {
 	// This is strongly discouraged.  You should use the CABundle instead.
 	InsecureSkipTLSVerify bool `json:"insecureSkipTLSVerify,omitempty" protobuf:"varint,4,opt,name=insecureSkipTLSVerify"`
 	// CABundle is a PEM encoded CA bundle which will be used to validate an API server's serving certificate.
-	CABundle []byte `json:"caBundle" protobuf:"bytes,5,opt,name=caBundle"`
+	// +optional
+	CABundle []byte `json:"caBundle,omitempty" protobuf:"bytes,5,opt,name=caBundle"`
 
 	// GroupPriorityMininum is the priority this group should have at least. Higher priority means that the group is preferred by clients over lower priority ones.
 	// Note that other versions of this group might specify even higher GroupPriorityMininum values such that the whole group gets a higher priority.

staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/generated.proto

@@ -89,6 +89,7 @@ message APIServiceSpec {
   optional bool insecureSkipTLSVerify = 4;
 
   // CABundle is a PEM encoded CA bundle which will be used to validate an API server's serving certificate.
+  // +optional
   optional bytes caBundle = 5;
 
   // GroupPriorityMininum is the priority this group should have at least. Higher priority means that the group is preferred by clients over lower priority ones.

staging/src/k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1/types.go

@@ -53,7 +53,8 @@ type APIServiceSpec struct {
 	// This is strongly discouraged.  You should use the CABundle instead.
 	InsecureSkipTLSVerify bool `json:"insecureSkipTLSVerify,omitempty" protobuf:"varint,4,opt,name=insecureSkipTLSVerify"`
 	// CABundle is a PEM encoded CA bundle which will be used to validate an API server's serving certificate.
-	CABundle []byte `json:"caBundle" protobuf:"bytes,5,opt,name=caBundle"`
+	// +optional
+	CABundle []byte `json:"caBundle,omitempty" protobuf:"bytes,5,opt,name=caBundle"`
 
 	// GroupPriorityMininum is the priority this group should have at least. Higher priority means that the group is preferred by clients over lower priority ones.
 	// Note that other versions of this group might specify even higher GroupPriorityMininum values such that the whole group gets a higher priority.