Goal

We want to add a new CLI option named `--all-images` to the `oc adm must-gather` command.
The oc client will scan all the CSVs on the cluster looking for `operators.openshift.io/must-gather-image=pullUrlOfTheImage` annotation building a list of must-gather images to be used to collect logs for all the products installed on the cluster and then the client will execute all of them aggregating the collection results.
Operator authors that want to opt-in to this mechanism should explicitly annotate their CSV with ``operators.openshift.io/must-gather-image` annotation.

User Stories

• As a Cluster Admin, I want to execute a `oc adm must-gather` only once collecting all the logs for all the products deployed on my cluster without the need to  explicitly specify a long (and error prone) list of images
• As a Red Hat support engineer, I want to be able to suggest to customers a single and simple command to collect must-gather logs for different products in a single pass reducing the request ping-pong came and so the case resolving time.

Non-Requirements

• List of things not included in this epic, to alleviate any doubt raised during the grooming process.

Notes

• Any additional details or decisions made/needed