this was a big change to move the requests.get/put into __check_request, so it logging to commands.log could happen 'before' the json url is sent to h2o, rather than after the response..this makes it match the "Sent" description in the log, and also is good because if we hang, the last entry in commands.log is the hung command
(noticed it was logging 'after' when I was looking at execution time for importS3
Merge branch 'master' of github.com:0xdata/h2o