Ensure the bootmenu is disabled by default. When not specified it will
default to the hypervisor default behaviour, however this is not
necessarily defined consistently across different distros. Therefore for
a consistent behaviour, simply ensure it is always configured to be off,
unless explicitly required to be enabled when the boot order is
configured.
Fixes: #947
Libvirt did already change the current 9216kb
to 16384kb when starting a domain so in practice this is a no-op.
The libvirt default was changed in 2014 in 81ba2298b2
When destroying domains were there are multiple box volumes to be
removed, need to perform a series of checks to establish that the
correct volumes are being removed.
- check if device aliases are in use
- process the box volume removals first
- detect if disks attached outside of vagrant-libvirt
- prefer aliases for additional disks
- avoid use of devices for multiple disks to detect as currently
assigned incorrectly.
- fallback to detecting number of box volumes to determine
point at which additional disks start
Attempts to flag a number of cases where behaviour might be incorrect to
help users spot when vagrant-libvirt may accidentally remove something
it shouldn't.
