[autotest] Bump up wsgi daemon count.

There is still a lot of free RAM on d4. We can easily spare another
10-20 daemons, but I'm taking it slowly. Previous resource usage
analysis seems to hold well (each process takes < 300M RAM) and
we have ~40G free.

TEST=Ran a suite on localhost.
BUG=chromium:431794
DEPLOY=apache

Change-Id: I511456a325aaaf3e70af7b892c03e4cd879f0190
Reviewed-on: https://chromium-review.googlesource.com/235554
Tested-by: Prashanth B <beeps@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Prashanth B <beeps@chromium.org>
Trybot-Ready: Prashanth B <beeps@chromium.org>
1 file changed