upgrade to cephadm: fix Drive Group generation

[sebastian-philipp]

Fixes: https://bugzilla.suse.com/show_bug.cgi?id=1181665 Signed-off-by: Sebastian Wagner sebastian.wagner@suse.com

Description:

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Checklist:

• [ ] Added unittests and or functional tests
• [ ] Adapted documentation
• [ ] Referenced issues or internal bugtracker
• [ ] Ran integration tests successfully (trigger with "@susebot run teuthology" in a GitHub comment; see the wiki for more information)

[sebastian-philipp]

I think we have to cope wit both: multi-document and single-document with many drive groups

[tserong]

I think we have to cope wit both: multi-document and single-document with many drive groups

Makes sense -- this PR seems to handle both (or even a mix), so I think we're good now.