Test workers setting

Set workers to 1 for testing.

Change-Id: If839db8fdb561dabdb3b321484c425ed602c8650
(cherry picked from commit 851dc63c7b3d0a4dcd2dc203a4ea0bee835d0406)
diff --git a/classes/cluster/virtual-mcp11-aio-telemetry/openstack/init.yml b/classes/cluster/virtual-mcp11-aio-telemetry/openstack/init.yml
index 264530b..485d00a 100755
--- a/classes/cluster/virtual-mcp11-aio-telemetry/openstack/init.yml
+++ b/classes/cluster/virtual-mcp11-aio-telemetry/openstack/init.yml
@@ -91,6 +91,8 @@
         port: ${_param:rabbitmq_port}
         ssl:
           enabled: ${_param:rabbitmq_ssl_enabled}
+      notification:
+        workers: 1
     agent:
       region: ${_param:openstack_region}
       polling: