Add git-repo project

Change-Id: I5649f760143112389afabd5de87b049d2a813558

checkers.yaml

diff --git a/checkers.yaml b/checkers.yaml
index b5787ee..d07308a 100644
--- a/checkers.yaml
+++ b/checkers.yaml
@@ -317,3 +317,10 @@
     repository: "gitiles"
     name: "Zuul Check Pipeline"
     description: "Run Zuul jobs on new patchsets"
+
+# Other projects.
+
+  - uuid: "zuul-check:git-repo"
+    repository: "git-repo"
+    name: "Zuul Check Pipeline"
+    description: "Run Zuul jobs on new patchsets"

zuul/main.yaml

diff --git a/zuul/main.yaml b/zuul/main.yaml
index 0949376..17d479d 100644
--- a/zuul/main.yaml
+++ b/zuul/main.yaml
@@ -31,6 +31,7 @@
           - plugins/webhooks
           - polymer-bridges
           # All of the rest of the projects, alphabetically sorted.
+          - git-repo
           - plugins/admin-console
           - plugins/autosubmitter
           - plugins/avatars-external