use current timestamp for request log events (from https://github.com/dropwizard/dropwizard/commit/da1c3e7345b3b9be15aa9f1d8452b8c9fe3de1bc) which I would have cherry-picked, but that file has been removed, apparently replaced by this one.
Merge pull request #20 from dbyron0/fix_log_timestamps

Use current timestamp for request log events.