Add xenial to stable

Change-Id: I9673ec608e4554729cbf7c307467e91642ecbcb3
diff --git a/jobs.yaml b/jobs.yaml
index b6a0e06..897e752 100644
--- a/jobs.yaml
+++ b/jobs.yaml
@@ -42,6 +42,8 @@
     flavor:
       - trusty32server
       - trusty64server
+      - xenial32server
+      - xenial64server
     branch: '2.2.2'
     tag: '-stable'
     jobs: