mon/AuthMonitor: Allow * wildcard for filesystem name

mon/AuthMonitor: Allow * wildcard for filesystem name

Extend ceph fs authorize to accept the * wildcard for the filesystem
name. This will grant access to all data pools associated with CephFS.
Therefore:

ceph fs authorize * client.foo /bar rwp

Is equivalent to:

ceph auth get-or-create client.foo mon "allow r" \
                                   mds "allow rwp path=/foo" \
                                   osd "allow rw tag cephfs data=*"

Note that the wildcard must be escaped from the shell in most cases.

Signed-off-by: Douglas Fuller <dfuller@redhat.com>