Currently we always run subscription-manager repos --disable="*" followed by enabling either the default repos from the distro config or, if specified, the repos from the --enablerepo CLI option.

Because sub-man auto-enables repos together with a registration we could drop the repo disablement (it takes quite a long time) which would leave default repos enabled and we could even drop enabling repos (that also takes a long time) when the customer hasn’t used the --enablerepo option.

Note: When the system is already pre-registered we want to run the repo enablement (not the disablement because we pass specific repoids to yum calls so even if more repos are enabled those won’t be used).