Remove NamespaceAutoProvision which is deprecated

According to https://github.com/kubernetes/kubernetes/blob/master/docs/admin/admission-controllers.md
NamespaceAutoProvision is deprecated, keeping it in the script tends to give a bad practice where namespace are auto created.

Suggest to remove it.

hack/local-up-cluster.sh

@@ -214,9 +214,9 @@ function set_service_accounts {
 function start_apiserver {
     # Admission Controllers to invoke prior to persisting objects in cluster
     if [[ -z "${ALLOW_SECURITY_CONTEXT}" ]]; then
-      ADMISSION_CONTROL=NamespaceLifecycle,NamespaceAutoProvision,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota
+      ADMISSION_CONTROL=NamespaceLifecycle,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota
     else
-      ADMISSION_CONTROL=NamespaceLifecycle,NamespaceAutoProvision,LimitRanger,ServiceAccount,ResourceQuota
+      ADMISSION_CONTROL=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota
     fi
     # This is the default dir and filename where the apiserver will generate a self-signed cert
     # which should be able to be used as the CA to verify itself