Refactored all pipelines branches to external soft param

Change-Id: I3e451815029227f287aa1575099b0cd25b72433d
diff --git a/jenkins/client/job/docker/cleanup.yml b/jenkins/client/job/docker/cleanup.yml
index eff5754..e1bdcd1 100644
--- a/jenkins/client/job/docker/cleanup.yml
+++ b/jenkins/client/job/docker/cleanup.yml
@@ -17,6 +17,7 @@
           scm:
             type: git
             url: "${_param:jenkins_gerrit_url}/mk/mk-pipelines"
+            branch: "${_param:jenkins_pipelines_branch}"
             credentials: "gerrit"
             script: docker-cleanup-pipeline.groovy
           trigger:
diff --git a/jenkins/client/job/docker/init.yml b/jenkins/client/job/docker/init.yml
index 63c3f27..c5f7d44 100644
--- a/jenkins/client/job/docker/init.yml
+++ b/jenkins/client/job/docker/init.yml
@@ -57,6 +57,7 @@
             scm:
               type: git
               url: "${_param:jenkins_gerrit_url}/mk/mk-pipelines"
+              branch: "${_param:jenkins_pipelines_branch}"
               credentials: "gerrit"
               script: docker-build-image-pipeline.groovy
             trigger:
diff --git a/jenkins/client/job/docker/testing.yml b/jenkins/client/job/docker/testing.yml
index bf65dbc..ece8e10 100644
--- a/jenkins/client/job/docker/testing.yml
+++ b/jenkins/client/job/docker/testing.yml
@@ -23,6 +23,7 @@
             scm:
               type: git
               url: "${_param:jenkins_gerrit_url}/mk/mk-pipelines"
+              branch: "${_param:jenkins_pipelines_branch}"
               credentials: "gerrit"
               script: docker-build-image-pipeline.groovy
             trigger: