Suppress Linux Aura inspector test failures

This patch temporarily disables the inspector failures that are
consistently failing on linux_blink_rel:
http://build.chromium.org/p/tryserver.chromium/builders/linux_blink_rel

BUG=336713
NOTRY=true
TBR=esprehn,eustas

Review URL: https://codereview.chromium.org/144633005

git-svn-id: svn://svn.chromium.org/blink/trunk@165512 bbb929c8-8fbe-4397-9dbb-9b2b20218538