Major fixes, changes and additions

[victorbrca]

I'm getting ready for my RHCE and while using the environment I ran into a few issues. I started by fixing the issues, but at the end I ended up revamping the whole project. There are a lot of changes in this pull request.

I have destroyed and recreated the env a few times everything works for me (Arch host).

Here is the high level list of changes:

• Moved inventory to an inventory folder
  • Then inventory file is now 'hosts.ini' and the variables are stored in group_vars
• Unified node playbook setup into a role
  • The main steps are executed in one task file with host filters
• Vagrantfile
  • Fixed file filters for rsync
  • Removed the extra partition from the repo. I found a file with about 30GB on the root folder that was causing the out of space issue (/EMPTY)
  • The synced folder for the control now it's a two way sync
  • Added individual Ansible steps to each node in the Vagrantfile so that Ansible runs when a single node is rebuilt
• README
  • Moved install instructions to another page
  • Re-organized sections
  • Added instructions for Arch
  • Added a section for registering the control node with a Red Hat developer subscription
  • Added a known issues section
• Added a practice exam page with:
  • A practice exam with a validation playbook
  • Instructions for generating a practice exam with ChatGPT
• Added an Exam Material page