This commit introduces some basic functionality for typed triggers:
- command
- action
Command triggers are triggers that will run before or after a given
sub-command.
Action triggers are for running triggers before or after internal
actions for Vagrant. This could be before or after a provision step,
before or after synced folders, or networking, etc.
This commit introduces a new option to the core trigger feature: `ruby`.
It can be defined to run ruby code when the trigger is configured to
fire. If you give the ruby block an env and machine argument, the
defined ruby code can use those variables internally.
This commit adds a new option `abort`, which when configured, will exit
the Vagrant process completely. If set to `true`, it will exit cleanly
with exit code 0. Otherwise, the exit code can be configured.