UBUNTU: [Config] s390x -- d-i module exclusions

Signed-off-by: Andy Whitcroft <apw@canonical.com>

debian.master/d-i/exclude-modules.s390x

+serial-modules
+ppp-modules
+pata-modules
+plip-modules
+floppy-modules
+pcmcia-storage-modules
+fb-modules
+mouse-modules
+irda-modules
+nic-pcmcia-modules
+pcmcia-modules
+sata-modules
+speakup-modules
+ipmi-modules
+usb-modules
+input-modules
+parport-modules
+nic-usb-modules
+firewire-core-modules
+message-modules