Add support for onos-2.2 in Jenkins pipelines

Change-Id: Iaffe311fca1f1df10e98f4a612609b112a3c2ab5
diff --git a/jjb/OnosSystemTest/onos-test-pipeline.yaml b/jjb/OnosSystemTest/onos-test-pipeline.yaml
index 88318ce..996f059 100644
--- a/jjb/OnosSystemTest/onos-test-pipeline.yaml
+++ b/jjb/OnosSystemTest/onos-test-pipeline.yaml
@@ -41,6 +41,7 @@
       - '1.15'
       - '2.0'
       - '2.1'
+      - '2.2'
       - 'master'
       - 'manually'
 
@@ -220,6 +221,7 @@
          name: ONOSbranch
          choices:
            - 'master'
+           - 'onos-2.2'
            - 'onos-2.1'
            - 'onos-2.0'
            - 'onos-1.15'