Added ability to specify custom formula pkg repo

Change-Id: I4ed718312074bf92a70cf5db3c3d282b85ce5f8b
diff --git a/jenkins/client/job/salt-models/tests.yml b/jenkins/client/job/salt-models/tests.yml
index e60fe22..1cc904d 100644
--- a/jenkins/client/job/salt-models/tests.yml
+++ b/jenkins/client/job/salt-models/tests.yml
@@ -70,6 +70,12 @@
               LEGACY_TEST_MODE:
                 type: boolean
                 default: "{{legacy_test_mode}}"
+              APT_REPOSITORY:
+                type: string
+                default: ""
+              APT_REPOSITORY_GPG:
+                type: string
+                default: ""
         test_system_reclass:
           name: test-salt-model-{{name}}
           template:
@@ -208,3 +214,9 @@
             LEGACY_TEST_MODE:
               type: boolean
               default: "false"
+            APT_REPOSITORY:
+              type: string
+              default: ""
+            APT_REPOSITORY_GPG:
+              type: string
+              default: ""