Add first draft of 'android-sdk' cookbook
Update and Improve Android SDK cookbook

- Now depends on 'ark' cookbook (for sweat download/unzip tooling)
- Fatal error if not provisioning a Linux 32-bit OS
- Download SDK 21.1 (last version without interactive prompt about
  license agreement)
- Preinstall a maximum of relevant SDK components (including SDK 22+)
Android SDK updates: keep it simple at the moment