Update for Voltha 2.14 release

Remove all 2.11 and 2.13 tests, add 2.14.

Signed-off-by: Eric Ball <eball@linuxfoundation.org>
Change-Id: Ifc261707dd36aa465b2f0cc3dfe69cdc14844da8
diff --git a/jjb/pipeline/voltha/bbsim-tests.groovy b/jjb/pipeline/voltha/bbsim-tests.groovy
index df4ad02..271de1d 100644
--- a/jjb/pipeline/voltha/bbsim-tests.groovy
+++ b/jjb/pipeline/voltha/bbsim-tests.groovy
@@ -37,7 +37,7 @@
 //   as a guarantee release jobs are running in an expected sandbox.
 // -----------------------------------------------------------------------
 String branchName() {
-    def validBranches = ["master", "voltha-2.13"]
+    def validBranches = ["master", "voltha-2.14"]
 
     // "${branch}" is assigned by jenkins
     if (!validBranches.contains(branch)) {