daemon: add compat code for pmgproxy 6.x

daemon: add compat code for pmgproxy 6.x

The changes to the listening behavior introduced with PVE 6.4 break
backwardscompatibility w.r.t. listening address and logging, which
should not be changed without explictly notifying the user.

This patch re-adds the family parameter, which is still used by
pmgproxy and based on its existence creates the socket as before.

compared to the IO::Socket::IP->new call used before
390fc10dc4a696dd30646cbdd018ad08d855175f, the only change is the
renaming of 'LocalAddr' to 'LocalHost' (which are synonymous in
IO::Socket::IP [0])

It can simply be reverted with the release of pmg-api 7.0 (where
we'll record the change in the release-notes and upgrade-page)

[0] https://perldoc.perl.org/IO::Socket::IP
Signed-off-by: Stoiko Ivanov <s.ivanov@proxmox.com>