Set correct version for Gnocchi in Queens

In Queens Gnocchi 4.2 is used.

Change-Id: Icd81fe35b521b857a5ac715ee9470af3fc895280
diff --git a/classes/cluster/virtual-mcp11-aio-telemetry/openstack/init.yml b/classes/cluster/virtual-mcp11-aio-telemetry/openstack/init.yml
index f4c7060..bc11c29 100755
--- a/classes/cluster/virtual-mcp11-aio-telemetry/openstack/init.yml
+++ b/classes/cluster/virtual-mcp11-aio-telemetry/openstack/init.yml
@@ -30,7 +30,7 @@
     panko_version: ${_param:openstack_version}
     ceilometer_version: ${_param:openstack_version}
     aodh_version: ${_param:openstack_version}
-    gnocchi_version: 4.0
+    gnocchi_version: 4.2
     gnocchi_statsd_resource_id: 07f26121-5777-48ba-8a0b-d70468133dd9
     ceilometer_create_gnocchi_resources: true
     ceilometer_agent_default_polling_interval: 15