Force output names to be unicode-compatible on Python 2. (#11485)
Force output names to be unicode-compatible on Python 2. (#11485)

* Force output names to be unicode-compatible on Python 2.

* import sys

* Update pipeline.py
apache/beam,iemejia/incubator-beam,apache/beam,chamikaramj/beam,chamikaramj/beam,apache/beam,lukecwik/incubator-beam,robertwb/incubator-beam,lukecwik/incubator-beam,apache/beam,lukecwik/incubator-beam,robertwb/incubator-beam,apache/beam,chamikaramj/beam,robertwb/incubator-beam,apache/beam,lukecwik/incubator-beam,lukecwik/incubator-beam,apache/beam,chamikaramj/beam,chamikaramj/beam,chamikaramj/beam,chamikaramj/beam,lukecwik/incubator-beam,chamikaramj/beam,robertwb/incubator-beam,iemejia/incubator-beam,apache/beam,robertwb/incubator-beam,lukecwik/incubator-beam,robertwb/incubator-beam,lukecwik/incubator-beam,chamikaramj/beam,chamikaramj/beam,lukecwik/incubator-beam,robertwb/incubator-beam,lukecwik/incubator-beam,apache/beam,apache/beam,robertwb/incubator-beam,robertwb/incubator-beam,robertwb/incubator-beam,apache/beam