Commits on May 27, 2021

1. Bug 1964591: Remove AI Agent image in case of service failure …

   This PR adds a handler for a failure scenario of `agent.service` which
   removes the `assisted-installer-agent` container image.
   
   This is a workaround for an issue where symlinks in `/var/lib/containers/`
   are corrupted. Deleting an image in `ExecStartPre` means that every time
   agent.service starts we make sure the image is available. If it's the
   very first attempt to start `agent.service`, then the the image will be
   pulled as it would be in any other scenario. Any consecutive attempt to
   start `agent.service` will first check if the image is present and in
   case of errors will remove it so that it can be pulled again.
   
   We are not using the `OnFailure` directive because the unit defined
   there would only be started once all the restarts attempts are exhausted
   which is not a desired workflow in this scenario here.
   
   Closes: OCPBUGSM-29583

   

   mkowalski committed May 27, 2021
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