Reduce host dependencies with ansible

Currently we require a ton of packages on the host system to run the Ansible modules we need. Most notably python-mysqldb and shade. This pull in a lot of other requirements, even a GCC compiler. This blueprint is to track the progess of implementing these deps in a container while preserving Ansible idempotency.

Additionally, with these new deps comes a change to the modules we use and the existing playbooks will need to be updated for that.