As described in the documentation, this flag is intended for the case
where the console output is being captured by a tool that appends its
own timestamps.
In the gate this is the job-output.txt. We want the console output as
people like to watch that scrolling by as part of the live console
log. Although this gets saved to job-output.txt, we still want to
keep logging to the individual log files even though it's technically
a duplicate -- in the multinode case the job-output.txt gets
interleaved by all the running nodes; it's much easier to just look at
the individual log files. Also, people are used to it where it is :)
Change-Id: I3486636f1c76139581f6cd9668426f507b7c621d
83ecb97fec