add update drill affordance callback
add update drill affordance callback

empireryan/director,gizatt/director,gizatt/director,manuelli/director,empireryan/director,mitdrc/director,edowson/director,rdeits/director,RobotLocomotion/director,empireryan/director,RobotLocomotion/director,patmarion/director,edowson/director,edowson/director,manuelli/director,RobotLocomotion/director,openhumanoids/director,RobotLocomotion/director,patmarion/director,patmarion/director,rdeits/director,RussTedrake/director,empireryan/director,edowson/director,patmarion/director,patmarion/director,manuelli/director,gizatt/director,mithrandir123/director,manuelli/director,gizatt/director,mitdrc/director,edowson/director,rdeits/director,rdeits/director,mitdrc/director,mithrandir123/director,mithrandir123/director,rdeits/director,mithrandir123/director,gizatt/director,openhumanoids/director,mithrandir123/director,RussTedrake/director,openhumanoids/director,openhumanoids/director,openhumanoids/director,empireryan/director,RussTedrake/director,RussTedrake/director,RussTedrake/director,RobotLocomotion/director,mitdrc/director,mitdrc/director,manuelli/director