run release build verification job on LTS branches

Change-Id: I819d3460f60cc9bb60d18a4257025183052fd48a
diff --git a/jjb/onos/onos-verify.yaml b/jjb/onos/onos-verify.yaml
index 7a748f8..52780ed 100644
--- a/jjb/onos/onos-verify.yaml
+++ b/jjb/onos/onos-verify.yaml
@@ -798,6 +798,10 @@
 
     stream:
       - 'master'
+      - 'onos-2.0'
+      - 'onos-1.15'
+      - 'onos-1.13'
+      - 'onos-1.12'
 
     jobs:
       - 'onos-{stream}-release-build-verify'