Enable events-kafka build on 3.1, 3.2, 3.3

Change-Id: Ia5df468740d9e9d9745e6ada772af1571564d6c1
diff --git a/jenkins/gerrit-bazel-plugin-events-kafka.yaml b/jenkins/gerrit-bazel-plugin-events-kafka.yaml
index ec62ef4..9c5c083 100644
--- a/jenkins/gerrit-bazel-plugin-events-kafka.yaml
+++ b/jenkins/gerrit-bazel-plugin-events-kafka.yaml
@@ -5,8 +5,11 @@
           branch:
             - master
           gerrit-branch:
-            - stable-3.0
+            - stable-3.4
       - 'plugin-{name}-bazel-{branch}':
           branch:
             - stable-2.16
+            - stable-3.1
+            - stable-3.2
+            - stable-3.3
       - 'plugin-{name}-verifier'