Build groovy-provider-plugin on master for stable-3.6

Also build all stable releases before 3.6 on their own
branches, whilst master can be used for master and stable-3.6.

Change-Id: I9b426c4e5320841333384c79195c61f3f5aa97b5
diff --git a/jenkins/gerrit-bazel-plugin-groovy-provider.yaml b/jenkins/gerrit-bazel-plugin-groovy-provider.yaml
index 76c6fa3..dc0d47a 100644
--- a/jenkins/gerrit-bazel-plugin-groovy-provider.yaml
+++ b/jenkins/gerrit-bazel-plugin-groovy-provider.yaml
@@ -4,10 +4,11 @@
       - 'plugin-scripting-{name}-bazel-{branch}':
           branch:
             - master
+            - stable-3.5
+            - stable-3.4
+            - stable-3.3
       - 'plugin-scripting-{name}-bazel-{branch}-{gerrit-branch}':
           branch:
             - master
           gerrit-branch:
-            - stable-3.5
-            - stable-3.4
-            - stable-3.3
+            - stable-3.6