Fix a warning message about the gce in-tree cloud provider state

Author: carlory

pkg/features/kube_features.go

@@ -221,6 +221,7 @@ const (
 	// owner: @andrewsykim
 	// alpha: v1.23
 	// beta: v1.29
+	// GA: v1.31
 	//
 	// Disable in-tree functionality in kubelet to authenticate to cloud provider container registries for image pull credentials.
 	DisableKubeletCloudCredentialProviders featuregate.Feature = "DisableKubeletCloudCredentialProviders"

staging/src/k8s.io/cloud-provider/plugins.go

@@ -40,7 +40,7 @@ var (
 		external bool
 		detail   string
 	}{
-		{"gce", false, "The GCE provider is deprecated and will be removed in a future release. Please use https://github.com/kubernetes/cloud-provider-gcp"},
+		{"gce", true, "The GCE built-in cloud provider was removed. Please use https://github.com/kubernetes/cloud-provider-gcp"},
 	}
 )
 

staging/src/k8s.io/cloud-provider/sample/README.md

@@ -11,7 +11,7 @@ Begin with 1.20, all cloud providers should not copy over or vendor in `k8s.io/k
 1. Have your external repo under k8s.io. e.g. `k8s.io/cloud-provider-<provider>`
 2. Create `main.go` file under your external repo CCM directory. Please refer to `basic_main.go` for a minimum working sample.
 Note: If you have a requirement of adding/deleting controllers within CCM, please refer to `k8s.io/kubernetes/cmd/cloud-controller-manager/main.go` for extra details.
-3. Build/release CCM from your external repo. For existing cloud providers, the option to import legacy providers from `k8s.io/legacy-cloud-provider/<provider>` is still available.
+3. Build/release CCM from your external repo. For existing cloud providers, the option to import legacy providers from `k8s.io/legacy-cloud-provider/<provider>` is still available until 1.31.
 
 ## Things you should NOT do