Set tryserver.chromiumos external config to use https instead of ssh
Set tryserver.chromiumos external config to use https instead of ssh

So that presubmit checks can be run for this server.

BUG=None
TEST=ran 'make restart'

Review URL: http://codereview.chromium.org/9956182

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@132661 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build