Prepare Frankfurt xtesting dockers

for the moment frankfurt = master dockers
We need to have dedicated dockers per version

Issue-ID: INT-1683

Signed-off-by: mrichomme <morgan.richomme@orange.com>
Change-Id: Ib0de9a8ef3ddef3b18133c476eb5c31ff8198d95
diff --git a/jjb/integration/xtesting/integration-xtesting.yaml b/jjb/integration/xtesting/integration-xtesting.yaml
index 2065813..8544cad 100644
--- a/jjb/integration/xtesting/integration-xtesting.yaml
+++ b/jjb/integration/xtesting/integration-xtesting.yaml
@@ -123,6 +123,9 @@
       - 'master':
             branch: 'master'
             files: ''
+      - 'frankfurt':
+            branch: 'frankfurt'
+            files: ''
     docker-root: '$WORKSPACE'
     mvn-settings: 'integration-settings'
     build-node: ubuntu1804-docker-8c-8g