Support remote_collector and aggregator in cluster

When deployed in a cluster, the remote_collector and aggregator
services are only started when the node holds the virtual IP address.
diff --git a/metadata/service/remote_collector/single.yml b/metadata/service/remote_collector/single.yml
index 120414c..8533ad2 100644
--- a/metadata/service/remote_collector/single.yml
+++ b/metadata/service/remote_collector/single.yml
@@ -7,6 +7,7 @@
     remote_collector_poolsize: 100
   heka:
     remote_collector:
+      automatic_starting: true
       enabled: true
       influxdb_time_precision: ms
       poolsize: ${_param:remote_collector_poolsize}