Add oauth checker

This creates a new checker for the oauth plugin and adds it to Zuul.

Change-Id: I8b9a6a5ed57d7fe534169d38cd7d757eceed5309
diff --git a/checkers.yaml b/checkers.yaml
index 54cf486..76f1423 100644
--- a/checkers.yaml
+++ b/checkers.yaml
@@ -91,6 +91,11 @@
 
 # Other plugins:
 
+  - uuid: "zuul-check:plugins_oauth"
+    repository: "plugins/oauth"
+    name: "Zuul Check Pipeline"
+    description: "Run Zuul jobs on new patchsets"
+
   - uuid: "zuul-check:plugins_code-owners"
     repository: "plugins/code-owners"
     name: "Zuul Check Pipeline"
diff --git a/zuul/main.yaml b/zuul/main.yaml
index caf3f4d..7f9773e 100644
--- a/zuul/main.yaml
+++ b/zuul/main.yaml
@@ -32,3 +32,4 @@
           # All of the rest of the projects, alphabetically sorted.
           - plugins/checks
           - plugins/code-owners
+          - plugins/oauth