Add missing credentials-id to sbt-based plugins

Change-Id: I4710ddd0272129feda29ad00ca993422b0003a91
diff --git a/jenkins/gerrit-sbt-plugin-template.yaml b/jenkins/gerrit-sbt-plugin-template.yaml
index 94859d1..4c942d7 100644
--- a/jenkins/gerrit-sbt-plugin-template.yaml
+++ b/jenkins/gerrit-sbt-plugin-template.yaml
@@ -20,8 +20,10 @@
           remotes:
             - origin:
                 url: https://gerrit.googlesource.com/a/plugins/{name}
+                credentials-id: gerrit.googlesource.com
             - gerrit:
                 url: https://gerrit.googlesource.com/a/gerrit
+                credentials-id: gerrit.googlesource.com
           branches:
             - origin/{branch}
           submodule: