As described in the comment and associated bugzilla, the behaviour of
setfiles has changed in Fedora 26 to require "-m" situations where
labeled file-systems are mounted below non-labeled file-systems. Our
loopback/chroot system appears to trigger this nicely, leading to a
setfiles call that does nothing without this.
Change-Id: I276c6f6a4fb44f4bea5004f6b4214f94757728ae
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
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