Add sudo permissions for jenkins user

Change-Id: I838362aff5eae55e1052d54f722d96c94a56117d
diff --git a/jenkins/client/job/debian/packages/heat/resources.yml b/jenkins/client/job/debian/packages/heat/resources.yml
index c7fb4d0..d167434 100644
--- a/jenkins/client/job/debian/packages/heat/resources.yml
+++ b/jenkins/client/job/debian/packages/heat/resources.yml
@@ -50,7 +50,7 @@
                 default: "{{branch}}"
               SOURCE_CREDENTIALS:
                 type: string
-                default: ""
+                default: "github-credentials"
               DEBIAN_SNAPSHOT:
                 type: boolean
                 default: 'true'