update maya attrs from parms after the cook, rather than before, so that they don't end up with an off-by-one-cook error.
update maya attrs from parms after the cook, rather than before,
so that they don't end up with an off-by-one-cook error.

sideeffects/HoudiniEngineForMaya,sideeffects/HoudiniEngineForMaya,sideeffects/HoudiniEngineForMaya