Revert "Update addon-resizer version"

This reverts commit 63ccedcfa7.

cluster/addons/cluster-monitoring/stackdriver/heapster-controller.yaml

@@ -86,7 +86,7 @@ spec:
                 fieldRef:
                   fieldPath: metadata.namespace
         # END_PROMETHEUS_TO_SD
-        - image: gcr.io/google_containers/addon-resizer:2.0
+        - image: gcr.io/google_containers/addon-resizer:1.7
           name: heapster-nanny
           resources:
             limits:
@@ -110,9 +110,11 @@ spec:
             - --extra-cpu={{ metrics_cpu_per_node }}m
             - --memory={{ base_metrics_memory }}
             - --extra-memory={{metrics_memory_per_node}}Mi
+            - --threshold=5
             - --deployment=heapster-v1.5.0-beta.0
             - --container=heapster
             - --poll-period=300000
+            - --estimator=exponential
       volumes:
         - name: ssl-certs
           hostPath: