Added parent pipeline for customer based test salt models pipelines

Change-Id: If86f567aac5997c9d48e41faf6f40ce259a9dd96
diff --git a/jenkins/client/job/salt-models/tests.yml b/jenkins/client/job/salt-models/tests.yml
index c68e3d9..8744c0c 100644
--- a/jenkins/client/job/salt-models/tests.yml
+++ b/jenkins/client/job/salt-models/tests.yml
@@ -82,6 +82,28 @@
               APT_REPOSITORY_GPG:
                 type: string
                 default: ""
+        test_customers_salt_models:
+          name: test-customers-salt-models
+          template:
+            type: workflow-scm
+            discard:
+              build:
+                keep_num: 50
+              artifact:
+                keep_num: 50
+            scm:
+              type: git
+              url: "${_param:jenkins_gerrit_url}/mk/mk-pipelines"
+              branch: "${_param:jenkins_pipelines_branch}"
+              credentials: "gerrit"
+              script: test-customers-salt-models.groovy
+            concurrent: false
+            param:
+              CUSTOMERS:
+                type: string
+                description: "Comma separated list of customer model names"
+                default: "{{customers}}"
+
         test_salt_model_customer:
           name: test-salt-model-customer-{{name}}
           template: