Formula improvements

     * Add poss. to disable|enable one mirror
     * Add retry for module. Usefull, at unstable networking.

Change-Id: I9a03e3f17be2331ed16b3babda6f671fb94f6003
Closes-Bug: PROD-21610 (PROD:21610)
diff --git a/tests/pillar/client.sls b/tests/pillar/client.sls
index 0c9ec9f..005dd04 100644
--- a/tests/pillar/client.sls
+++ b/tests/pillar/client.sls
@@ -3,6 +3,8 @@
     enabled: true
     mirrors:
       target01:
+        enabled: true
+        fetch_retry: 1
         extra_flags: [ "--verbose", "--progress", "--nosource", "--no-check-gpg", "--rsync-extra=none" ]
         method: "rsync" # string
         arch: [ 'amd64' ]