Build git-refs-filter module on stable-3.2

Also define builds for stable-3.3 and stable-3.4.

Change-Id: I5eafcf7b2266daa0fded9660f0a63f1ec7d446be
diff --git a/jenkins/gerrit-bazel-module-git-refs-filter.yaml b/jenkins/gerrit-bazel-module-git-refs-filter.yaml
index 1b2a6b8..2247bc5 100644
--- a/jenkins/gerrit-bazel-module-git-refs-filter.yaml
+++ b/jenkins/gerrit-bazel-module-git-refs-filter.yaml
@@ -5,8 +5,10 @@
           branch:
             - master
           gerrit-branch:
-            - master
-            - stable-3.2
+            - stable-3.4
+            - stable-3.3
       - 'module-{name}-bazel-{branch}':
           branch:
+            - master
+            - stable-3.2
             - stable-2.16