Update configure-helper.sh to support heapster resource optimizations

In addition to the shell script changes the heapster yaml has been
updated to use addon resizer 1.8.3 for the heapster-nanny. Addon resizer 1.8.3
is being used to take advantage of the new minClusterSize flag. Note this is a
no-op change. The values specified for heapster-nanny reflect the current
configuration used with version 1.8.2.

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

@@ -80,7 +80,7 @@ spec:
                 fieldRef:
                   fieldPath: metadata.namespace
         # END_PROMETHEUS_TO_SD
-        - image: k8s.gcr.io/addon-resizer:1.8.2
+        - image: k8s.gcr.io/addon-resizer:1.8.3
           name: heapster-nanny
           resources:
             limits:
@@ -113,6 +113,7 @@ spec:
             - --container=heapster
             - --poll-period=300000
             - --estimator=exponential
+            - --minClusterSize={{ heapster_min_cluster_size }}
       volumes:
         - name: heapster-config-volume
           configMap: