Bug 966070 - bm55: disable buildbot_master and remove IP from signing_new_token_allowed_ips. r=catlee

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extra : amend_source : 7dcace301b310176c7d497615f8d4ad0b2e6f146
Bug 988483: change puppet versions, add puppet-common on ubuntu
Merge branch 'master' of https://github.com/mozilla/build-puppet into ssd