Switch all support packages to nominal velocity limits

[gavanderhoorn]

@marshallpowell97 wrote (in ros-industrial/staubli_val3_driver#2 (comment)):

From what I've been able to gather, the maximum values are a "best case" scenario, and cannot be expected from multiple joints at the same time. The motion descriptor only has a singular "vel" parameter which is applied to the joint that is moving the furthest and all of the other joints will move at a percentage of that. So using the nominal velocities would be my recommendation.