provide a mapping between repository ID and repository location

[olafhering]

One of the maintenance tasks of an RMT server is to find potentially stale repositories. This can be done as shown in issue #1136. One could parse the rmt-cli mirror [args] output, to get a list of "active" repositories. Everything else is potentially stale.

It would be nice to have an API to query the download locations. Perhaps as additional column in the rmt-cli repos [custom] list --cvs output. This removes to the need to parse a logfile to find the same information. In the end, rmt-cli already knows upfront where repository content will be stored.

[olafhering]

There is a slight regression in 2.17, compared to 2.15 and earlier:

In 2.15 the output of rmt-cli mirror for each repository was: INFO -- : Mirroring repository $something to /usr/share/rmt/public/repo/$somewhere, followed by success of failure messages.

In 2.17 the output of rmt-cli mirror changed. The lines INFO -- : Mirroring repository $something to /usr/share/rmt/public/repo/$somewhere are only shown if the URL can be reached. Like not right now, because $dist ist down.

As a result the mapping about what is enabled and what exists on disk is out of sync, in external tooling.