GitLab

It includes:
* intoducing -z commandline option to show/not-show issue details
* fix the issues discovered by gpylint
* adding bug link and flakiness dashboard link to test expection file display

BUG=109008,107773
TEST= unit test passes and run script locally.

Review URL: https://chromiumcodereview.appspot.com/9476021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@124746 0039d316-1c4b-4281-b951-d872f2087c98