Bug 975216 - Please update libxcb on the linux test slaves to a more recent release. Downgrade libxcb0 due to bug 991274. r=dustin
Backout d1e2f1e8cfd1
Bug 975216 - Please update libxcb on the linux test slaves to a more recent release. Temporarily disable spot AMI generation. r=dustin
Merge branch 'master' of https://github.com/mozilla/build-puppet into ssd