This allows adding additional debian packages on pve hosts
which depends on a qemu binary being installed.
The following install paths were tested:
* install of proxmox-ve on debian systems with standard package
set: works as expected
* install of proxmox-ve on debian having the debian qemu package
installed: refused by the package manager as expected, until
qemu, qemu-system-x86, libspice-server1 are deinstalled
* manual install of qemu-system-x86 after proxmox-ve
is installed: refused by the package manager as expected, until
libspice-server1 is installed. If libspice-server1 is installed
then proxmox-ve is deinstalled.
* install of packages depending on qemu-system-x86
having proxmox-ve installed: thoses packages are installed as
expected, no conflict
Acked-by: Wolfgang Bumiller <w.bumiller@proxmox.com>