SET-626 Olympus - Ensure Ansible updates Nginx images

[RanabirChakraborty]

Issue: https://issues.redhat.com/browse/SET-626

[rpelisse]

@RanabirChakraborty That won't work. You are using rpm and dnf commands on the target (Olympus) while nginx runs as container based on image pulled. You need to change the podman role so that, when the container is based on a pulled image, Ansible performs the pull BEFORE starting the associated container.
You also need to think about idempotency, meaning that if the pulled image is changed (ie updated) you need to notify the nginx services to restart.