Add 'release/2018.8.1' branch to repos

Fixes: PROD-23153 (PROD:23153)

Change-Id: I9972e0cb9065dd1fdddde6cd195aef72c9abfd03
diff --git a/jenkins/client/job/git-mirrors/2way.yml b/jenkins/client/job/git-mirrors/2way.yml
index bb6b44b..36e07d4 100644
--- a/jenkins/client/job/git-mirrors/2way.yml
+++ b/jenkins/client/job/git-mirrors/2way.yml
@@ -11,7 +11,7 @@
             - name: mcp-common-scripts
               source: mcp/mcp-common-scripts
               target: Mirantis/mcp-common-scripts
-              branches: "master"
+              branches: "master,release/2018.8.1"
             - name: mcp-local-repo-model
               source: mcp/mcp-local-repo-model
               target: Mirantis/mcp-local-repo-model