We have the pvebanner.service in places which ensures this gets
called on boot before the getty target.
Thus this only had an effect if we changed the nodename to IP mapping
_and_ upgraded/reinstalled pve-manager, then switching to another TTY
would show the updated IP. But as this a) is for sure not a common
triggered path and b) a IP change suggest a reboot either way, and if
the user can handle it on their own without a reboot, they should be
able to also handle an outdated /etc/issue until the next reboot.
Also for PVE ontop of plain Debian a reboot is needed, so that the
PVE kernel gets booted, so this shouldn't be an issue ther neither.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>