[autotest] Add RewriteCond to rewrite special task result url

Apache 2.4 running in trusty seems behaving differently from 2.2 running in
precise. Each RewriteRule requires its own RewriteCond set.

DEPLOY=apache
BUG=chromium:444800
TEST=local test(trusty)

Change-Id: I55f00bf06a33c5d2a9dd1d92d2c407feb4681e34
Reviewed-on: https://chromium-review.googlesource.com/237484
Trybot-Ready: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
Reviewed-by: Prashanth B <beeps@chromium.org>
Commit-Queue: Dan Shi <dshi@chromium.org>
1 file changed