chromium-status: tests: update command line flags for latest appengine

The command line flags here work for appengine 1.6.x, but not 1.8.x
(which is the current, and what is on the bots).

BUG=chromium:314501
TEST=`./tests/main_test.py` no longer aborts due to bad cmdline

Review URL: https://codereview.chromium.org/55373003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/chromium-status@232824 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed