Deployment tooling/Cabal/2016-06-13

Random updates and questions

• Tilerator is moving (slowly but surely)
  • graphoid likely to follow
• Scap MW canary deploy:
  • Question about prerequisites: https://phabricator.wikimedia.org/T136839 ?
• scap stages
  • unexpected behavior when batch_size = 1
  • should go through each stage with a particular `batch_size`