Fix service status command output

Change-Id: Ic8339b2cef5cd51dfc39dffcc7e445001403dd6a
diff --git a/classes/cluster/virtual-mcp11-aio/openstack/init.yml b/classes/cluster/virtual-mcp11-aio/openstack/init.yml
index 996c039..37e21b5 100755
--- a/classes/cluster/virtual-mcp11-aio/openstack/init.yml
+++ b/classes/cluster/virtual-mcp11-aio/openstack/init.yml
@@ -314,5 +314,5 @@
           path: /etc
       cmds:
         service_status:
-          cmd: 'source /root/keystonercv3; openstack compute service list; openstack volume service list'
+          cmd: '(. /root/keystonercv3; openstack compute service list; openstack volume service list)'
           dst: /tmp/openstack_service_report.txt