Enhancement: add python cookbook

Revision: 56424ab64b06f584c13dba2dbb1cc5369faf20f4
Source: https://github.com/poise/python
Enhancement: awscli cookbook

Related:

 * easybib/issues#1840
 * getcourse/issues#51
Fix: ignore python cookbook
Fix: teach rubocop to ignore cookbooks
Enhancement: remove duplication - use .rubocop.yml for only truth
Fix: refactor chefspec ignore

 * uses .rubocop.yml as well now
 * allows us to ignore 3rd-party cookbooks
Merge pull request #361 from till/f/ignore

F/ignore
Enhancement: enable recipe on AWS
Fix: local fix, remove depends
Fix: install pip before

 * python_pip doesn't install its own dependencies
 * include recipe to get it done
Enhancement: configure awscli
Update: update depends
Fix: secret name
Fix: permissions
Fix: please rubocop
Merge pull request #360 from till/t/python-and-awscli

AWS Cli for AWS Instances