Migrate os-collect-config to zuul v3 jobs

Define the zuul v3 layout for jobs that we want to execute.

Change-Id: I9d1c80f8f0acfcbd030e1fabf75941515c2f80f8

zuul.d/layout.yaml

@@ -0,0 +1,9 @@
+---
+
+- project:
+    name: openstack/os-collect-config
+    templates:
+      - tripleo-multinode-baremetal-minimal
+      - tripleo-multinode-container-minimal
+      - tripleo-ovb-check
+      - tripleo-ovb-experimental