Support config kubelet provider id for local cluster.

Author: RainbowMango

hack/local-up-cluster.sh

@@ -78,6 +78,7 @@ EXTERNAL_CLOUD_PROVIDER_BINARY=${EXTERNAL_CLOUD_PROVIDER_BINARY:-""}
 EXTERNAL_CLOUD_VOLUME_PLUGIN=${EXTERNAL_CLOUD_VOLUME_PLUGIN:-""}
 CLOUD_PROVIDER=${CLOUD_PROVIDER:-""}
 CLOUD_CONFIG=${CLOUD_CONFIG:-""}
+KUBELET_PROVIDER_ID=${KUBELET_PROVIDER_ID:-"$(hostname)"}
 FEATURE_GATES=${FEATURE_GATES:-"AllAlpha=false"}
 STORAGE_BACKEND=${STORAGE_BACKEND:-"etcd3"}
 STORAGE_MEDIA_TYPE=${STORAGE_MEDIA_TYPE:-"application/vnd.kubernetes.protobuf"}
@@ -702,7 +703,7 @@ function start_kubelet {
        if [[ "${CLOUD_PROVIDER:-}" == "aws" ]]; then
          cloud_config_arg+=("--provider-id=$(curl http://169.254.169.254/latest/meta-data/instance-id)")
        else
-         cloud_config_arg+=("--provider-id=$(hostname)")
+         cloud_config_arg+=("--provider-id=${KUBELET_PROVIDER_ID}")
        fi
     fi