voltha-2.13 release updates

Add 2.13 jobs and update versions across existing jobs.

Change-Id: I67095bf8fe6226f99701ae9351593d87da6f7f55
Signed-off-by: Eric Ball <eball@linuxfoundation.org>
diff --git a/.gitreview b/.gitreview
index 33e487a..74ed635 100644
--- a/.gitreview
+++ b/.gitreview
@@ -3,3 +3,4 @@
 port=29418
 project=ci-management.git
 defaultremote=origin
+defaultbranch=master