Debug output

Change-Id: Ia3d3bb51c68529e1b1345f6d90b619e6bbe89d28
diff --git a/src/com/mirantis/mk/openstack.groovy b/src/com/mirantis/mk/openstack.groovy
index 06ff885..6702be6 100644
--- a/src/com/mirantis/mk/openstack.groovy
+++ b/src/com/mirantis/mk/openstack.groovy
@@ -211,6 +211,7 @@
 def getHeatStackOutputParam(env, name, outputParam, path = null) {
     cmd = "heat output-show ${name} ${outputParam}"
     output = runOpenstackCommand(cmd, env, path)
+    echo("${cmd}: ${output}")
     return output.substring(1, output.length()-1)
 }