PBS: ifupdown2 reload (#7013)

Author: MickLesk

install/proxmox-backup-server-install.sh

@@ -19,6 +19,8 @@ cat <<EOF >>/etc/apt/sources.list
 deb http://download.proxmox.com/debian/pbs bookworm pbs-no-subscription
 EOF
 $STD apt-get update
+export DEBIAN_FRONTEND=noninteractive
+export IFUPDOWN2_NO_IFRELOAD=1
 $STD apt-get install -y proxmox-backup-server
 msg_ok "Installed Proxmox Backup Server"