osd: add method to zap simple osds

[jan--f]

This parses the c-v simple scan result in /etc/ceph/osd to retrieve the devices the osd.$i uses and then passes them to c-v lvm zap. The zap subcommand will zap devices no problem, the trick is really just to figure out which devices to zap.

Signed-off-by: Jan Fajerski jfajerski@suse.com

Fixes bsc#1178657

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)

[jan--f]

:+1: I also confirmed that existing running OSDs won't be accidentally zapped by the new script (in case the files in /etc/ceph/osd are outdated or wrong) as an unmount failes with Device busy.