ci flakiness - add retries when fetching registry image from quay.io

This change should mitigate:

```
Trying to pull quay.io/software-factory/registry:2...
Error: parsing image configuration: fetching blob: received unexpected HTTP status: 502 Bad Gateway
```

Change-Id: Ia5d54234c176f54d4c3c7fe6df60b591729ca69e

roles/setup-local-registry/tasks/main.yaml

@@ -22,6 +22,14 @@
   command: podman volume rm registry
 
 # quay.io/software-factory/registry:2 is a copy of https://hub.docker.com/_/registry
+- name: Fetch the podman registry container image
+  command: podman pull quay.io/software-factory/registry:2
+  register: podman_fetch
+  retries: 12
+  delay: 10
+  until:
+    - podman_fetch.rc == 0
+
 - name: Start the podman registry container
   command: |
     podman container run -dt -p 5000:5000 --name registry \