Fixing Vagrant setup

[THS-on]

The current Vagrant setup is not working, due to move to the rust agent and needs some general updates to work again.

We should sync the Ansible files with https://github.com/keylime/ansible-keylime

ToDos

• Update to latest Fedora image
• Use IMA emulator from rust agent
• Remove references to components that no longer exist (e.g. keylime_node, keylime_webapp)
• Remove travis CI
• Sync ansible files with https://github.com/keylime/ansible-keylime
• (optional) add some kind of smoke test to see more easily if it breaks

[mpeters]

Everything but adding tests was done. I've been trying to think of a way to do that and it's not really possible with github actions, etc since it requires you to use vagrant to spin up a VM. We import the main setup from the keylime-ansible role directly, so almost all of the rest of it is pretty vagrant specific.