Create new system level for Tenant Telemetry

Since Openstack Pike ceilometer-api and database setup is deprecated,
added classes which need to be used since Openstack Pike release.

Change-Id: I36a145e24da647bae64bfb9e6de1b058282e340e
Related-Prod: https://mirantis.jira.com/browse/PROD-21282
diff --git a/ceilometer/agent/telemetry/single.yml b/ceilometer/agent/telemetry/single.yml
new file mode 100644
index 0000000..6b42537
--- /dev/null
+++ b/ceilometer/agent/telemetry/single.yml
@@ -0,0 +1,2 @@
+classes:
+- service.ceilometer.agent.single.common