P1: Enable Launching of Raspberry Pis from Main Computer

[vhyhuang]

Description:

• The Raspberry Pis need to launch their ROS nodes at the appropriate time. The overall launch sequence needs to be initiated and controlled by the main computer.

Goals:

• Add a Python package to run SSH clients to run the launch files of each Pi.
• Modify scheduler.py to issue SSH commands.

Acceptance Criteria:

• Python package for SSH should track if the commands issued to each Pi successfully return.
• Running scheduler.py to launch everything should launch packages in the correct sequence.

Notes:

• Possible packages: Paramiko, Fabric, PySSH2, Spur, ssh2-python

[vhyhuang]