add xz support for repomd repositories

[arharovets]

Description

Bugzilla Issue: https://bugzilla.suse.com/show_bug.cgi?id=1246976

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[ngetahun]

@digitaltom I created a pr on the repomd parser gem to add support for xz.

[digitaltom]

@digitaltom I created a pr on the repomd parser gem to add support for xz.

Great, thanks! Let's make sure RMT uses the updated repomd-parser in 2.24 (pubcloud team wants to push that release soon).

[ngetahun]

We will use this PR to bump the gem as soon as Ivan accepts it

[ikapelyukhin]

I've released v1.2.0 to RubyGems.

[ngetahun]

LGTM!