[cern] dcos: Fix template_def and dcoccluster.yaml

• fix import in template_def
• add argument in get_env_files
• fix template output

Change-Id: I55ad7769e921a5374146387f242c744b220016a9 Signed-off-by: Spyros Trigazis spyridon.trigazis@cern.ch

magnum/drivers/dcos_centos_v1/templates/dcoscluster.yaml

@@ -602,7 +602,7 @@ resources:
 outputs:
 
   api_address:
-    value: {get_attr: [dcos_masters, dcos_master_ip]}
+    value: {get_attr: [dcos_masters, resource.0.dcos_master_external_ip]}
     description: >
       This is the API endpoint of the DC/OS master. Use this to access
       the DC/OS API from outside the cluster.