openSUSE 15.6: SUSE-SU-2024:4416-1 moderate: vhostmd buffer fix

## This update for vhostmd fixes the following issues: Updated to version 1.2 * Fix actions using the 'free' command * Fix buffer accounting when generating metric XML * Change actions to retrieve vendor and product info * Add a 'unit' attribute to the metrics element * vif-stats.py: convert to Python3 * conf: Update the 'VirtualizationVendor' action to strip any URLs that may follow the vendor name (bsc#1230961) * Fix virtio transport to work with libvirt >= 9.7.0 * Added hardening to systemd service (bsc#1181400) * spec: Don't replace user-modified dtd in /etc/vhostmd/ (bsc#1154838) * Relax virtio requirement in config file (bsc#1152803) Updated to version 1.1 (bsc#1129772) * Merge libserialclient with libmetrics * Misc bug fixes and improvements ## Patch Instructions: