Expose host serial console over a websocket
Expose host serial console over a websocket

Expose host serial console over a "/console" route, using a
websocket. An authenticated client can access the host serial console
via reads/writes to this websocket.

Change-Id: I0f63a3844e777d4f4c45194c85a63c9f10a91744
Signed-off-by: Deepak Kodihalli <54105a30055f1e07853b8ee7a2f0d75d22ed98c1@in.ibm.com>

openbmc/phosphor-rest-server,openbmc/phosphor-rest-server