Build uploadvalidator for Gerrit v3.0

Change-Id: I13898f4df9b8b946c49b1e800915ab36d3a14fd3
diff --git a/jenkins/gerrit-buck-bazel-plugin-uploadvalidator.yaml b/jenkins/gerrit-buck-bazel-plugin-uploadvalidator.yaml
index 6d8fb94..878e18a 100644
--- a/jenkins/gerrit-buck-bazel-plugin-uploadvalidator.yaml
+++ b/jenkins/gerrit-buck-bazel-plugin-uploadvalidator.yaml
@@ -9,8 +9,12 @@
             - stable-2.10
       - 'plugin-{name}-bazel-{branch}':
           branch:
-            - master
             - stable-2.16
             - stable-2.15
             - stable-2.14
-
+      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
+          branch:
+            - master
+          gerrit-branch:
+            - master
+            - stable-3.0
\ No newline at end of file