Bug#221602: grub-installer: Should enable serial console on serial line installs

[Petter Reinholdtsen <pere@hungry.com>]

Here are some suggestions for debconf templates to use to store info
on the console type:


Template: debian-installer/framebuffer
Type: boolean
Default: true
Description: enable frame buffer console on boot

Template: debian-installer/console/type
Type: string
Default: framebuffer
Default[s390]: serial
Description: What type of console will be used during installation
 This is used to set the environment variable TERM_TYPE
 .
 Usual it is 'framebuffer' with the video hardware and keyboard, but
 you can use 'serial' for systems without console hardware.  To avoid
 pluging of serial cables, use 'telnet' or 'ssh'.

Template: debian-installer/console/protocol
Type: string
Default: linux
Default[s390]: dumb
Description: What type of terminal protocol do the console use
 This is used to set the environment variable TERM
 .
 Among the well known protocols are:
 .
   dumb  - no protocol, ASCII only
   vt100 - VT100-compatible terminal
   linux - Linux virtual console

Template: debian-installer/console/serial/device
Type: string
Default: ttyS0
Description: Device name (in /dev/) of serial console device

Template: debian-installer/console/serial/speed
Type: string
Default: 9600
Description: Speed of serial console?

Template: debian-installer/console/serial/character
Type: string
Default: 8N1
Description: Number of databits, parity and stopbits for the serial console.