stable -> 2.2.0rc1

Change-Id: Ifaf7a6a7dda530cae6f7fec416b00954b3c3ba00
diff --git a/jobs.yaml b/jobs.yaml
index e7bc057..b65b7d4 100644
--- a/jobs.yaml
+++ b/jobs.yaml
@@ -44,7 +44,7 @@
     flavor:
       - trusty32server
       - trusty64server
-    branch: '2.2.0b3'
+    branch: '2.2.0rc1'
     tag: '-stable'
     jobs:
       - 'mininet-{flavor}{tag}'