Revert "Update addon-resizer version"

This reverts commit 63ccedcfa7.

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

@@ -78,7 +78,7 @@ spec:
             - name: usr-ca-certs
               mountPath: /usr/share/ca-certificates
               readOnly: true
-        - image: gcr.io/google_containers/addon-resizer:2.0
+        - image: gcr.io/google_containers/addon-resizer:1.7
           name: heapster-nanny
           resources:
             limits:
@@ -102,10 +102,12 @@ 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
-        - image: gcr.io/google_containers/addon-resizer:2.0
+            - --estimator=exponential
+        - image: gcr.io/google_containers/addon-resizer:1.7
           name: eventer-nanny
           resources:
             limits:
@@ -129,9 +131,11 @@ spec:
             - --extra-cpu=0m
             - --memory={{base_eventer_memory}}
             - --extra-memory={{eventer_memory_per_node}}Ki
+            - --threshold=5
             - --deployment=heapster-v1.5.0-beta.0
             - --container=eventer
             - --poll-period=300000
+            - --estimator=exponential
       volumes:
         - name: ssl-certs
           hostPath: