Build pull-replication plugin on stable-3.4 branch

Change-Id: I6e15c4c9709a3ad7a7138c4911b2b567c1033878
diff --git a/jenkins/gerrit-bazel-plugin-pull-replication.yaml b/jenkins/gerrit-bazel-plugin-pull-replication.yaml
index a7b5969..ec52232 100644
--- a/jenkins/gerrit-bazel-plugin-pull-replication.yaml
+++ b/jenkins/gerrit-bazel-plugin-pull-replication.yaml
@@ -7,4 +7,9 @@
             - stable-3.3
             - stable-3.2
             - stable-3.1
+      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
+          branch:
+            - master
+          gerrit-branch:
+            - stable-3.4
       - 'plugin-{name}-verifier'