[release/1.6 backport] Mount devmapper xfs file system with "nouuid" option. #6731
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backport of #6650
fixes #6587
Two xfs file systems with same UUID can not be mounted on the same system.
However devmapper snapshots will have same UUID as original filesystem.
This patch fixes the bug by mounting a xfs file system with "nouuid" option.
(cherry picked from commit 0d0b2bd)