add additional options

[jonmorehouse]

Let's add some more options that will make this more flexible to end users ... here are a few options as a first pass:

• provisionerSteps: a list of commands to run that override the current configuration steps. This will allow folks who are using non-debian based AMI's with terraform to still use the provisioner
• ansibleLocalScript: a url to a custom ansible-local.py script?

Note: it might be worth pulling ansible-local into its own project to continue trying to add legitimate feature parody with ansible to it. Right now, I'm sure there are plenty of things that don't work

[jonmorehouse]

Doesn't seem super relevant now that ansible-local is a little more flexible