[autotest] Support autoserv arg with empty space to run inside container

Argument that has empty space needs to be surrounded by single quote in the
autoserv commandline to be executed inside container.

BUG=chromium:478376
TEST=local, create a server-side test with name containing empty space.
http://dshi.mtv/afe/#tab_id=view_job&object_id=597

Change-Id: I8ebfda07f43055de6b2c0a8306dd38504a395700
Reviewed-on: https://chromium-review.googlesource.com/266373
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Dan Shi <dshi@chromium.org>
Trybot-Ready: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
1 file changed