Add upstream mirroring for contrail-third-party-cache-fixup repo

Change-Id: If6e701fa14775dfdcd4ca8e9028978a93ee769d1
diff --git a/jenkins/client/job/opencontrail/git-mirrors/upstream.yml b/jenkins/client/job/opencontrail/git-mirrors/upstream.yml
index af4c6ac..0f60c76 100644
--- a/jenkins/client/job/opencontrail/git-mirrors/upstream.yml
+++ b/jenkins/client/job/opencontrail/git-mirrors/upstream.yml
@@ -46,6 +46,8 @@
               branches: ${_param:contrail_dpdk_extra_branches}
             - name: contrail-dpdk
               branches: ${_param:contrail_dpdk_branches}
+            - name: contrail-third-party-cache-fixup
+              branches: ${_param:contrail_third_party_cache_fixup_branches}
           template:
             discard:
               build: