Add saml plugin checker

Change-Id: I14da771687e6ecd69ca3f2530fe9ab9ca28ee1df
diff --git a/checkers.yaml b/checkers.yaml
index a3d5e33..df49abf 100644
--- a/checkers.yaml
+++ b/checkers.yaml
@@ -110,3 +110,8 @@
     repository: "plugins/reviewers"
     name: "Zuul Check Pipeline"
     description: "Run Zuul jobs on new patchsets"
+
+  - uuid: "zuul-check:plugins_saml"
+    repository: "plugins/saml"
+    name: "Zuul Check Pipeline"
+    description: "Run Zuul jobs on new patchsets"
diff --git a/zuul/main.yaml b/zuul/main.yaml
index 71a00c4..46f7c0f 100644
--- a/zuul/main.yaml
+++ b/zuul/main.yaml
@@ -35,3 +35,4 @@
           - plugins/lfs
           - plugins/oauth
           - plugins/reviewers
+          - plugins/saml