Add new param for salt-master in model testing

Change-Id: I9fc534a9463f37f01af83a5258bd8fe92ea4d890
diff --git a/jenkins/client/job/salt-models/tests.yml b/jenkins/client/job/salt-models/tests.yml
index 7c2b369..f87914e 100644
--- a/jenkins/client/job/salt-models/tests.yml
+++ b/jenkins/client/job/salt-models/tests.yml
@@ -58,6 +58,9 @@
               SYSTEM_GIT_REF:
                 type: string
                 default: ""
+              CONFIG_NODE_NAME_PATTERN:
+                type: string
+                default: "{{config_node_name}}"
         test_system_reclass:
           name: test-salt-model-{{name}}
           template: