QLA Filter Output Log Improvements

The output log for the QLA filter needs two fixes:

Example:

02:59:20.939 19/04/2016, w@127.0.0.1, select @@version_comment limit 1

1. The date format needs to be in a database-standard format. Something like "YYYY-MM-DD HH:MM:SS" or a unix timestamp.

2. There should not be a space after the commas. This makes it incredibly difficult to parse on the command line, as a leading space will need to be truncated.

Thanks,
-will