Move insert_key directive before VM create to avoid custom key create
Add comments motivating the config choices for ssh config steps
Expand user key authz logic to append key rather than just replace all
existing keys in vagrant user authorized_keys file.

Set insert_key to false, prevent vagrant from generating new key
then set our own ssh private key to be used, first priority
finally, copy our own ssh public key into vm as authorized key

We need to be able to test both http and https configurations
since https with be the default for ood (http is only for dev).
Also remove the unused host rename config.

This is needed so that the ansible playbook is correctly
selected based on hostname.

Chose high number IP address to avoid DHCP address conflict with
warewulf. This range should be marked off eventually.

The existing ansible line works for both ohpc and ood based on the
hostname and role configuration.