Maven verification jobs for 1.12 and 1.13 branches

Change-Id: Ia4463407a16641f1b112d5c879198b322f1a2a86
diff --git a/jjb/onos/onos-verify.yaml b/jjb/onos/onos-verify.yaml
index 81b98ba..2f9b44b 100644
--- a/jjb/onos/onos-verify.yaml
+++ b/jjb/onos/onos-verify.yaml
@@ -563,6 +563,8 @@
 
     stream:
       - 'master'
+      - 'onos-1.12'
+      - 'onos-1.13'
 
     jobs:
       - 'onos-{stream}-maven-verify'