Add salttest:enabled to runtest pillars

Change-Id: I2de5f02368d52524ce32530d0f8bf82673d43af0
diff --git a/classes/cluster/virtual-mcp11-aio/openstack/init.yml b/classes/cluster/virtual-mcp11-aio/openstack/init.yml
index f6780fb..167d4a4 100755
--- a/classes/cluster/virtual-mcp11-aio/openstack/init.yml
+++ b/classes/cluster/virtual-mcp11-aio/openstack/init.yml
@@ -285,6 +285,8 @@
           enabled: ${_param:rabbitmq_ssl_enabled}
   runtest:
     enabled: True
+    salttest:
+      enabled: True
     tempest:
       enabled: True
       cfg_dir: ${_param:runtest_tempest_cfg_dir}