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/cluster.yml b/metadata/service/remote_collector/cluster.yml
new file mode 100644
index 0000000..9e60e86
--- /dev/null
+++ b/metadata/service/remote_collector/cluster.yml
@@ -0,0 +1,13 @@
+applications:
+- heka
+classes:
+- service.heka.support
+parameters:
+  _param:
+    remote_collector_poolsize: 100
+  heka:
+    remote_collector:
+      automatic_starting: false
+      enabled: true
+      influxdb_time_precision: ms
+      poolsize: ${_param:remote_collector_poolsize}