Update max pod number to 10

This should not cause any waste as the pods are only scaled up when necessary.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=209881536

java/google/registry/proxy/kubernetes/proxy-service-canary.yaml

@@ -46,5 +46,5 @@ spec:
     apiVersion: extensions/v1beta1
     kind: Deployment
     name: proxy-deployment-canary
-  maxReplicas: 5
+  maxReplicas: 10
   minReplicas: 1

java/google/registry/proxy/kubernetes/proxy-service.yaml

@@ -46,5 +46,5 @@ spec:
     apiVersion: extensions/v1beta1
     kind: Deployment
     name: proxy-deployment
-  maxReplicas: 5
+  maxReplicas: 10
   minReplicas: 1