Add Concourse CI configs

ci/tasks/registry.yaml

@@ -0,0 +1,16 @@
+---
+platform: linux
+inputs:
+  - name: quay-pull-request
+run:
+  path: /bin/sh
+  args:
+    - -c
+    - |
+      set -eux
+      export TEST=true
+      pip install --quiet -r quay-pull-request/requirements.txt
+      pip install --quiet -r quay-pull-request/requirements-tests.txt
+      cd quay-pull-request
+      PYTHONPATH="." py.test --timeout=7200 --verbose \
+        --show-count -x test/registry_tests.py