adding physical node to Murdock

Introduction

This page documents how to add a physical node to RIOT's CI (Murdock).

Steps:

• add RasPi to the Pi Fleet
• on pihub, add "murdock" role to RasPi

On RasPi:

• make sure all tools are installed and permissions configured so the murdock user can flash the board
• sudo ssh ci.riot-os.org, check fingerprint, type "yes" (populate host key cache)
• sudo systemctl start sshtun@murdock-slave && sudo systemctl enable sshtun@murdock-slave
• sudo su -s /bin/bash murdock -c "git cache init"
• add a file /etc/default/dwqw@$board-name (e.g., /etc/default/dwqw@samr21-xpro):

(this is for samr21-xpro):

EDBG=/usr/local/bin/edbg 
RIOT_TERMINAL=picocom
SERIAL=ATML2127031800008983
DWQ_QUEUES=samr21-xpro
MURDOCK_HOOK=/srv/murdock/murdock_hook.sh