Use ceilometer_influxdb_password instead of stacklight

https://github.com/Mirantis/mk-lab-salt-model/pull/194
diff --git a/ceilometer/server/cluster.yml b/ceilometer/server/cluster.yml
index 572d571..0cbdd82 100644
--- a/ceilometer/server/cluster.yml
+++ b/ceilometer/server/cluster.yml
@@ -10,7 +10,7 @@
           host: ${_param:stacklight_monitor_node01_address}
           port: 8086
           user: ceilometer
-          password: ${_param:stacklight_influxdb_password}
+          password: ${_param:ceilometer_influxdb_password}
           database: ceilometer
         elasticsearch:
           enabled: true