Remove preconfigured yum repos as last step of build

[MarkSymsCtx]

Avoid unexpected fallback by removing all yum repos and require the build process to add them

Signed-off-by: Mark Syms mark.syms@citrix.com

[euanh]

Would it be better to mark them disabled, so they are still there if someone wants to install a utility package in at run time?

[MarkSymsCtx]

We add our own repos from artifactory in the build process, we want those to be preferred and they should have everything needed.

[euanh]

Yes, but we also use these containers for local builds, and being able to say yum --enablerepo=base install <foo> is very useful in that case.

[MarkSymsCtx]

We have to avoid the names clashing then. Probably needs an update to the Jenkins build jobs to prefix or suffix the repo names before merging this

[mseri]

I think an issue here may be that the internal centos images are already using the correct snapshoted repositories, while the upstream centos is not

[mseri]

@MarkSymsCtx @euanh Should we close or merge this PR?