Run gnome review bot on gocd

gocd/gnome-review-bot.gocd.yaml

@@ -0,0 +1,19 @@
+format_version: 3
+pipelines:
+  GNOME.Review:
+    group: openSUSE.Checkers
+    lock_behavior: unlockWhenFinished
+    environment_variables:
+      OSC_CONFIG: /home/go/config/oscrc-gnome-review-bot
+    materials:
+      script:
+        git: https://github.com/openSUSE/openSUSE-release-tools.git
+    timer:
+      spec: 0 */5 * ? * *
+      only_on_changes: false
+    stages:
+    - Run:
+        resources:
+        - staging-bot3
+        tasks:
+        - script: ./check_source.py --verbose --skip-add-reviews review