Build secure-config on stable-3.1

Change-Id: If34c241c81ba5ea3a92bb215312103b7fc254b25
diff --git a/jenkins/gerrit-bazel-plugin-secure-config.yaml b/jenkins/gerrit-bazel-plugin-secure-config.yaml
index c79a0c0..ec82b4a 100644
--- a/jenkins/gerrit-bazel-plugin-secure-config.yaml
+++ b/jenkins/gerrit-bazel-plugin-secure-config.yaml
@@ -1,10 +1,9 @@
 - project:
     name: secure-config
     jobs:
-      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
+      - 'plugin-{name}-bazel-{branch}':
           branch:
             - master
-          gerrit-branch:
-            - master
+            - stable-3.1
             - stable-3.0
             - stable-2.16