gives an ssh error for the second launch. Changing the
pr2_gripper_sensor_actions.launch launch file to use the ROBOT
environment variable rather than default to pr2 lets it launch, but it
quits with the error
PR2GripperSenosrController could not find sensor named 'r_gripper_motor'
Checking the rostopic list, no /pressure or /accelerometer topics are
listed. (/pressure topics can be created using the fingertip_pressure
package, but that does not appear to create /accelerometer topics)