Use ceilometer_influxdb_password instead of stacklight

https://github.com/Mirantis/mk-lab-salt-model/pull/194
diff --git a/heka/ceilometer_collector/single.yml b/heka/ceilometer_collector/single.yml
index d350a69..0ad299d 100644
--- a/heka/ceilometer_collector/single.yml
+++ b/heka/ceilometer_collector/single.yml
@@ -7,7 +7,7 @@
       enabled: true
       influxdb_database: ceilometer
       influxdb_host: ${_param:stacklight_monitor_node01_address}
-      influxdb_password: ${_param:_param:influxdb_password}
+      influxdb_password: ${_param:ceilometer_influxdb_password}
       influxdb_port: 8086
       influxdb_username: ceilometer
       resource_decoding: false