Add zuul-results-summary plugin

Change-Id: I1027268e918ccad37b2cec6e4b25a27726bd38d7
diff --git a/checkers.yaml b/checkers.yaml
index e897463..e395a20 100644
--- a/checkers.yaml
+++ b/checkers.yaml
@@ -285,3 +285,8 @@
     repository: "plugins/zuul"
     name: "Zuul Check Pipeline"
     description: "Run Zuul jobs on new patchsets"
+
+  - uuid: "zuul-check:plugins_zuul-results-summary"
+    repository: "plugins/zuul-results-summary"
+    name: "Zuul Check Pipeline"
+    description: "Run Zuul jobs on new patchsets"
diff --git a/zuul/main.yaml b/zuul/main.yaml
index 1944542..af401e9 100644
--- a/zuul/main.yaml
+++ b/zuul/main.yaml
@@ -69,3 +69,4 @@
           - plugins/task
           - plugins/uploadvalidator
           - plugins/zuul
+          - plugins/zuul-results-summary