Build plugin-manager on stable-2.16

Change-Id: Ie9df906c3d61875757ef6212d31874a591695859
diff --git a/jenkins/gerrit-buck-bazel-plugin-plugin-manager.yaml b/jenkins/gerrit-buck-bazel-plugin-plugin-manager.yaml
index 9bb70bc..e4296b1 100644
--- a/jenkins/gerrit-buck-bazel-plugin-plugin-manager.yaml
+++ b/jenkins/gerrit-buck-bazel-plugin-plugin-manager.yaml
@@ -6,11 +6,7 @@
             - stable-2.13
       - 'plugin-{name}-bazel-{branch}':
           branch:
-            - stable-2.15
-            - stable-2.14
-      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
-          branch:
-            - master
-          gerrit-branch:
             - master
             - stable-2.16
+            - stable-2.15
+            - stable-2.14