After all OSDs are updated to each major release of Ceph, the
require-osd-release version is set to that release so all the latest
functionality for osds can be enabled by Ceph. In Quincy there is
a warning if all osds are on Quincy and this flag is not set, so
this will resolve the health warning.
Signed-off-by: Travis Nielsen <tnielsen@redhat.com>