Correct FORMULAS_REVISION for salt-models

Change-Id: I8360bb623112dcb7ac3cb21406d9e7c2375f3af4
diff --git a/jenkins/client/job/salt-models/tests.yml b/jenkins/client/job/salt-models/tests.yml
index f67eb66..e59ae6a 100644
--- a/jenkins/client/job/salt-models/tests.yml
+++ b/jenkins/client/job/salt-models/tests.yml
@@ -168,7 +168,10 @@
               default: ""
             FORMULAS_SOURCE:
               type: string
-              default: "{{formulas_src}}"
+              default: "pkg"
+            FORMULAS_REVISION:
+              type: string
+              default: "stable"
             SYSTEM_GIT_URL:
               type: string
               default: ""