chore(gke): migrate region step 1 - update region kubernetes_deployment to gke_kubernetes_deployment (#12999)

Author: OremGLG

kubernetes_engine/django_tutorial/polls.yaml

@@ -22,6 +22,7 @@
 # For more info about Deployments:
 #   https://kubernetes.io/docs/user-guide/deployments/
 
+# [START gke_kubernetes_deployment]
 # [START kubernetes_deployment]
 apiVersion: apps/v1
 kind: Deployment
@@ -95,6 +96,7 @@ spec:
           emptyDir: {}
       # [END volumes]
 # [END kubernetes_deployment]
+# [END gke_kubernetes_deployment]
 
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