- implemented foodcritic and cookstyle corrections
- switched Tempest installation back to packages since it is now fresh enough for use
- deprecated node.foo.bar method access for node['foo']['bar'] bracket syntax
- removed calls to GitHub for Tempest
- moved apt package_overrides to common cookbook
Implements blueprint modern-chef
Change-Id: Ia315e51d9ef3fd4677b65074cd7f18a47669208d
Depends-On: I5c5371eed12b282a527576822b270cce8b0e76a7