Strip any trailing whitespace from rbd showmapped

More recent versions of ceph append a bit of whitespace to the line
after the name of the /dev/rbdX device; this causes the monitor check
to fail as it can't find the device name due to the whitespace.

This fix excludes any characters after the /dev/rbdN match.
Merge pull request #65 from javacruft/wip-ocf-rbd

Strip any trailing whitespace from rbd showmapped

Reviewed-by: Sage Weil <sage@inktank.com>
osd: log weirdness if caller_ops hash gets bigger than the log

Signed-off-by: Sage Weil <sage@inktank.com>
qa: fix quoting of wget URLs

Broke this in ae0c2bbb50ab04467b5223a4f61bfca4b0830142.

Signed-off-by: Sage Weil <sage@inktank.com>
qa: rbd/map-snapshot-io: remove image when done

Signed-off-by: Sage Weil <sage@inktank.com>
Merge git://github.com/ceph/ceph