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>