dut-console: Add support for servo_console

Also, fix pty_name for cr50 console.

BUG=none
TEST=dut-console servo with a servo_micro

Change-Id: I65f8b57107dbed1214430ac85737b1a37bbfe6a7
Reviewed-on: https://chromium-review.googlesource.com/1188058
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Nick Sanders <nsanders@chromium.org>
1 file changed