[AETHER-255] Fix for tost-onos build

Introduces two jobs that build tost image using master and onos-2.2 branches

Change-Id: Ic1f8c290d347192fbf48cb84d9e4b9cda8a65fde
diff --git a/jjb/repos/tost-onos.yaml b/jjb/repos/tost-onos.yaml
index 3475736..302ec14 100644
--- a/jjb/repos/tost-onos.yaml
+++ b/jjb/repos/tost-onos.yaml
@@ -14,13 +14,23 @@
 
 - job-group:
     name: 'verify-tost-onos-jobs'
+
     jobs:
       - 'verify-licensed'
       - 'tag-check':
           dependency-jobs: 'license-check_tost-onos'
       - 'make-test':
+          name-extension: 'onos-2.2'
+          make-test-vars: |
+            ONOS_BRANCH={name-extension}
           make-test-targets: 'docker-build'
           junit-allow-empty-results: true
+          build-node: '{bigger-build-node}'
+      - 'make-test':
+          name-extension: 'master'
+          make-test-targets: 'docker-build'
+          junit-allow-empty-results: true
+          build-node: '{bigger-build-node}'
 
 - job-group:
     name: 'publish-tost-onos-jobs'