Changing vmfusion ostype from `FreeBSD_64` to `freebsd-64` to prevent er...

When I use `:os_type_id => 'FreeBSD64'` in my `definition.rb` with the vmfusion provider, I get the following error in VMware Fusion:

    Guest operating system 'freebsd_64' is not supported
    Select a guest operating system from the main page of Virtual Machine Settings.

Changing the `:fusion` ostype for FreeBSD_64 to `freebsd-64` (instead of `FreeBSD_64` appears to fix the issue)