Simplify Ansible Playbook

[kwabenantim]

Summary

• Try to put all configuration in one place using a single central config file that all roles can read from (e.g. move more settings from roles into group_vars).
• Add a Python script to generate a config after asking the user a series of questions with defaults.
  • Also, possibly run prep tasks like ansible-vault encrypt
  • Possibly perform the installation as well.