The next release we are targeting is RHEL 8.3 Beta, switch the
repositories over.
In the future, we should distinguish between beta and non-beta based on
/etc/os-release so we don't have to hard-code this upstream.
The beta repositories are not actually available yet, so in our tests,
we have to override this again to point at the GA ones (currently 8.2).
Needless to say, this situation leaves much to be desired.
Signed-off-by: Tom Gundersen <teg@jklm.no>
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