Add opencontrail_node_role parameter for contrail nodes

Use opencontrail_node_role parameter to perform one-shot
operations on cluster level.

Related-PROD: PROD-23789
Change-Id: I417316a41b85fa54e3eb0e82814c199026f495f2
diff --git a/reclass/storage/system/opencontrail_gateway_single.yml b/reclass/storage/system/opencontrail_gateway_single.yml
index 30c7043..a545465 100644
--- a/reclass/storage/system/opencontrail_gateway_single.yml
+++ b/reclass/storage/system/opencontrail_gateway_single.yml
@@ -14,3 +14,4 @@
             salt_master_host: ${_param:reclass_config_master}
             linux_system_codename: ${_param:opencontrail_gateway_system_codename}
             single_address: ${_param:opencontrail_gateway_address}
+            opencontrail_node_role: primary
\ No newline at end of file