3a515cc7d6
This commit adds a new error type that can be raised whenever a storage controller of the required type is not found. This indicates that a user needs to either add the storage controller manually or change their disk configuration. It also removes the last hardcoded instance of "SATA Controller" as a default argument.
Vagrant Core Plugins
These are plugins that ship with Vagrant. Vagrant core uses its own plugin system to power a lot of the core pieces that ship with Vagrant. Each plugin will have its own README which explains its specific role.