Bug 1150196: Use proxxy instances in scl3 r=rail
Bug 1150196: Use proxxy instances in scl3 r=rail

lissyx/build-mozharness,walac/build-mozharness,lissyx/build-mozharness,armenzg/build-mozharness,walac/build-mozharness,mozilla/build-mozharness,mozilla/build-mozharness,armenzg/build-mozharness