Make external and internal unittest.bash identical, with the goal of eventually unifying them.
Make external and internal unittest.bash identical, with the goal of eventually unifying them.

PiperOrigin-RevId: 292191792

perezd/bazel,bazelbuild/bazel,cushon/bazel,katre/bazel,perezd/bazel,davidzchen/bazel,bazelbuild/bazel,dslomov/bazel-windows,bazelbuild/bazel,akira-baruah/bazel,cushon/bazel,dslomov/bazel-windows,katre/bazel,safarmer/bazel,ButterflyNetwork/bazel,davidzchen/bazel,twitter-forks/bazel,davidzchen/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,ulfjack/bazel,meteorcloudy/bazel,katre/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel,meteorcloudy/bazel,werkt/bazel,perezd/bazel,dslomov/bazel,twitter-forks/bazel,akira-baruah/bazel,dslomov/bazel,werkt/bazel,davidzchen/bazel,ButterflyNetwork/bazel,davidzchen/bazel,perezd/bazel,werkt/bazel,safarmer/bazel,ButterflyNetwork/bazel,cushon/bazel,ulfjack/bazel,davidzchen/bazel,meteorcloudy/bazel,dslomov/bazel-windows,perezd/bazel,bazelbuild/bazel,katre/bazel,akira-baruah/bazel,dslomov/bazel-windows,safarmer/bazel,meteorcloudy/bazel,dslomov/bazel,safarmer/bazel,dslomov/bazel,ulfjack/bazel,bazelbuild/bazel,werkt/bazel,meteorcloudy/bazel,werkt/bazel,twitter-forks/bazel,akira-baruah/bazel,twitter-forks/bazel,ulfjack/bazel,ulfjack/bazel,davidzchen/bazel,ulfjack/bazel,katre/bazel,bazelbuild/bazel,dslomov/bazel,ButterflyNetwork/bazel,meteorcloudy/bazel,akira-baruah/bazel,cushon/bazel,werkt/bazel,cushon/bazel,safarmer/bazel,perezd/bazel,ulfjack/bazel,akira-baruah/bazel,dslomov/bazel,dslomov/bazel-windows,dslomov/bazel-windows,katre/bazel,cushon/bazel,perezd/bazel,twitter-forks/bazel,dslomov/bazel,twitter-forks/bazel,safarmer/bazel