Bug 977298 - Use -u when calling Talos runtests.py; r=jmaher
Bug 977298 - Use -u when calling Talos runtests.py; r=jmaher

simar7/build-mozharness,simar7/build-mozharness,mrrrgn/build-mozharness,lundjordan/mozharness,lissyx/build-mozharness,mozilla/build-mozharness,mrrrgn/build-mozharness,escapewindow/mozharness,armenzg/build-mozharness,escapewindow/mozharness,walac/build-mozharness,kartikgupta0909/gittest,armenzg/build-mozharness,kartikgupta0909/gittest,kartikgupta0909/build-mozharness,lissyx/build-mozharness,kartikgupta0909/build-mozharness,mozilla/build-mozharness,walac/build-mozharness,kartikgupta0909/mozilla-mozharness,lundjordan/mozharness,kartikgupta0909/mozilla-mozharness