bug 749421 - change blob upload fatal to warning. r=aki
bug 749421 - change blob upload fatal to warning. r=aki

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