ceph.in/ceph_argparse.py: move find_cmd_target() to ceph_argparse.py

Signed-off-by: Dan Mick <dan.mick@inktank.com>
MonCommands.h: osd pool delete "rw" perms, osd pool set no longer exp

Signed-off-by: Dan Mick <dan.mick@inktank.com>
rest/test.py: osd lspools should be a 'GET'

Signed-off-by: Dan Mick <dan.mick@inktank.com>
ceph.in: remove dead code

Signed-off-by: Dan Mick <dan.mick@inktank.com>
Merge branch 'wip-cephtool-cleanup' into next

Reviewed-by: Sage Weil <sage@inktank.com>