Make the Go SDK more robust with respect to requested split points.
Make the Go SDK more robust with respect to requested split points.

robertwb/incubator-beam,robertwb/incubator-beam,RyanSkraba/beam,robertwb/incubator-beam,chamikaramj/beam,chamikaramj/beam,lukecwik/incubator-beam,apache/beam,chamikaramj/beam,chamikaramj/beam,iemejia/incubator-beam,RyanSkraba/beam,lukecwik/incubator-beam,chamikaramj/beam,robertwb/incubator-beam,markflyhigh/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,apache/beam,chamikaramj/beam,chamikaramj/beam,robertwb/incubator-beam,robertwb/incubator-beam,markflyhigh/incubator-beam,lukecwik/incubator-beam,RyanSkraba/beam,markflyhigh/incubator-beam,RyanSkraba/beam,apache/beam,apache/beam,markflyhigh/incubator-beam,lukecwik/incubator-beam,robertwb/incubator-beam,apache/beam,markflyhigh/incubator-beam,lukecwik/incubator-beam,RyanSkraba/beam,robertwb/incubator-beam,robertwb/incubator-beam,lukecwik/incubator-beam,RyanSkraba/beam,RyanSkraba/beam,apache/beam,lukecwik/incubator-beam,chamikaramj/beam,lukecwik/incubator-beam,iemejia/incubator-beam,robertwb/incubator-beam,apache/beam,lukecwik/incubator-beam,apache/beam,apache/beam,chamikaramj/beam,apache/beam,markflyhigh/incubator-beam,apache/beam,markflyhigh/incubator-beam