Bug 1096653, fix hg-share clobbers of gaia-central, r=catlee
Bug 1096653, fix hg-share clobbers of gaia-central, r=catlee

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