The ceph auth get-or-create example here is the only place on the
page that does not use 'allow <perms.' syntax. I found that
confusing. Update to use allow and single quotes.
Signed-off-by: Travis Rhoden <trhoden@gmail.com>
Unprotect examines all pools, so use blanket x before 0.54. After
that, use class-read restricted by object_prefix to rbd_children.
Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
