use shorter login message

And avoid to use debian version, because that changes over time and
it is clumsy to keep in sync.

bin/pvebanner

@@ -7,7 +7,6 @@ use PVE::Cluster;
 my $nodename = PVE::INotify::nodename();
 my $localip = PVE::Cluster::remote_node_ip($nodename, 1);
 
-
 my $xline = '-' x 78;
 
 my $banner = '';
@@ -28,8 +27,6 @@ __EOBANNER
 
 }
 
-$banner .= "Debian GNU/Linux 7.0 \\n \\l\n\n";
-
 open(ISSUE, ">/etc/issue");
 
 print ISSUE $banner;

debian/postinst

@@ -68,6 +68,9 @@ case "$1" in
     test -e /proxmox_install_mode || invoke-rc.d pvedaemon restart
     test -e /proxmox_install_mode || invoke-rc.d pveproxy restart
     test -e /proxmox_install_mode || invoke-rc.d pvestatd restart
+    
+    # rewrite banner
+    test -e /proxmox_install_mode || pvebanner || /bin/true
 
     #a2ensite pve.conf >/dev/null 2>&1