Squashed commit of the following:
-install iptables as it is not part of minimal install.
-change swig for bullseye to swig4.0
-php7.4-dev for build required (php-config)
-add python3-distutils
-libks seems to be required for mod_verto
-disable mod_avmd to keep in sync with ubuntu-config (eaaef03163 (diff-62a8f25a3200194e88b1073f2b11ebdf1622761f025a30158c012e83e5f593aa))