Support arguments in beetbox.sh

[thom8]

https://github.com/beetboxvm/beetbox/blob/master/provisioning/beetbox.sh

Would like the ability to pass an arg to this script to only run a single playbook.

eg. beetbox.sh provision would run playbook-provision.yml and any additional args should pass through to ansible-playbook

[Decipher]

I'd say single or multiple, as generally you want to run the config and update playbooks before the specific playbook.

[thom8]

config should probably run before any playbook as there probably would never be a case where you wouldn't want the latest config applied and this is very fast.

Maybe the update playbook could now be combined with config.

[thom8]

Addressed in #303 & #321