Don't poll scm for python-flask-hello

Change-Id: I70a8b32f9f207fa85ff1ea87f74a4464eb9557d0
diff --git a/jenkins/client/job/docker/testing.yml b/jenkins/client/job/docker/testing.yml
index 2f9177d..147d551 100644
--- a/jenkins/client/job/docker/testing.yml
+++ b/jenkins/client/job/docker/testing.yml
@@ -26,6 +26,7 @@
               reverse:
                 projects:
                   - build-debian-python-flask-hello-ubuntu-trusty
+                state: UNSTABLE
             param:
               IMAGE_NAME:
                 type: string