Build zookeeper-refdb plugin on its own stable-3.2 branch

Change-Id: I8bdd4059098a6c1b598b1f3c173cdd0ef686adf3
diff --git a/jenkins/gerrit-bazel-plugin-zookeeper-refdb.yaml b/jenkins/gerrit-bazel-plugin-zookeeper-refdb.yaml
index 3d99ca7..12f35a1 100644
--- a/jenkins/gerrit-bazel-plugin-zookeeper-refdb.yaml
+++ b/jenkins/gerrit-bazel-plugin-zookeeper-refdb.yaml
@@ -1,14 +1,10 @@
 - project:
     name: zookeeper-refdb
     jobs:
-      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
-          branch:
-            - master
-          gerrit-branch:
-            - master
-            - stable-3.2
       - 'plugin-{name}-bazel-{branch}':
           branch:
+            - master
+            - stable-3.2
             - stable-3.1
             - stable-3.0
       - 'plugin-{name}-verifier'