According to ifconfig(8), to list only Ethernet interfaces, excluding
all other interface types, including the loopback interface, the command
to use should be:
ifconfig -l ether
Related to: #8760
This is a follow-up of #10717 to use the same naming convention as on
Linux guests, in order to reduce the diffs.
Also adds the missing capability to `unmount_virtualbox_shared_folder`
on FreeBSD guests.
Since the virtualbox guest additions seem to only be available for
freeBSD, move the shared folder functionality over to freebsd guests
rather than all BSD guests.
Prior to this commit, when the guest capability attempted to expand a
path with spaces it would quote the path passed in. However if the path
also had a relative path those quotes would end up making `printf`
ignore it and not properly expand the path fully. This commit updates
that to first escape the quotes of a path and then pass in the new path
to be expanded.
This commit refactors the freebsd networking to:
1. Use predictable network naming
2. Properly handle DHCP vs static networks on up and reload [GH-5852]
3. Perform all networking configuration in a single command to prevent
partial configuration.
