Add stable-3.0 view for plugins

Change-Id: I109edc0ce8018bf7c8c27206598b4b8ea7bd1e9f
diff --git a/jenkins/gerrit-buck-bazel-plugin-template.yaml b/jenkins/gerrit-buck-bazel-plugin-template.yaml
index 8fd7c8a..7d60a7a 100644
--- a/jenkins/gerrit-buck-bazel-plugin-template.yaml
+++ b/jenkins/gerrit-buck-bazel-plugin-template.yaml
@@ -83,6 +83,7 @@
       - 'Plugins-{branch}'
     branch:
       - master
+      - stable-3.0
       - stable-2.16
       - stable-2.15
       - stable-2.14