Force `ddeploy` options (e.g. image retention)

See related comment.

To discuss whether we want to inject certain options to the ddeploy jobs automatically. The case of the image labels Artifactory uses to cleanup old images is the only use-case I can think of right now.

Implementation-wise, if we force anything using CLI arguments on the call to ddeploy, that will deny the user the ability to set the flag themselves (since CLI takes precedence over YAML in ddeploy).