Build lfs plugin against 3.3

Change-Id: I281bde0c3cdc489f961cc5710608e6954977c11b
diff --git a/jenkins/gerrit-bazel-plugin-lfs.yaml b/jenkins/gerrit-bazel-plugin-lfs.yaml
index b99dd55..b67e4a8 100644
--- a/jenkins/gerrit-bazel-plugin-lfs.yaml
+++ b/jenkins/gerrit-bazel-plugin-lfs.yaml
@@ -6,6 +6,7 @@
             - master
           gerrit-branch:
             - master
+            - stable-3.3
             - stable-3.2
       - 'plugin-{name}-bazel-{branch}':
           branch: