Use $TEST_TMPDIR for test_interrupt_kills_child.
Use $TEST_TMPDIR for test_interrupt_kills_child.

Fixes #2938 where concurrently running tests can step on each other.

Change-Id: I1d75dd323149c4f892f8d5a28c1abf9ff055abca
PiperOrigin-RevId: 156340949

ulfjack/bazel,spxtr/bazel,juhalindfors/bazel-patches,davidzchen/bazel,juhalindfors/bazel-patches,dropbox/bazel,cushon/bazel,davidzchen/bazel,perezd/bazel,bazelbuild/bazel,juhalindfors/bazel-patches,variac/bazel,dslomov/bazel,perezd/bazel,perezd/bazel,meteorcloudy/bazel,perezd/bazel,dslomov/bazel,dropbox/bazel,variac/bazel,snnn/bazel,dslomov/bazel,safarmer/bazel,spxtr/bazel,dslomov/bazel-windows,twitter-forks/bazel,ulfjack/bazel,meteorcloudy/bazel,snnn/bazel,damienmg/bazel,perezd/bazel,akira-baruah/bazel,aehlig/bazel,dropbox/bazel,damienmg/bazel,safarmer/bazel,werkt/bazel,spxtr/bazel,cushon/bazel,damienmg/bazel,dslomov/bazel-windows,katre/bazel,aehlig/bazel,katre/bazel,dslomov/bazel,juhalindfors/bazel-patches,akira-baruah/bazel,ulfjack/bazel,twitter-forks/bazel,aehlig/bazel,davidzchen/bazel,werkt/bazel,snnn/bazel,davidzchen/bazel,werkt/bazel,bazelbuild/bazel,safarmer/bazel,aehlig/bazel,spxtr/bazel,ButterflyNetwork/bazel,cushon/bazel,dslomov/bazel-windows,meteorcloudy/bazel,ButterflyNetwork/bazel,akira-baruah/bazel,damienmg/bazel,aehlig/bazel,dropbox/bazel,katre/bazel,juhalindfors/bazel-patches,cushon/bazel,katre/bazel,akira-baruah/bazel,akira-baruah/bazel,perezd/bazel,ulfjack/bazel,variac/bazel,meteorcloudy/bazel,twitter-forks/bazel,spxtr/bazel,meteorcloudy/bazel,damienmg/bazel,cushon/bazel,safarmer/bazel,ulfjack/bazel,dropbox/bazel,katre/bazel,aehlig/bazel,ButterflyNetwork/bazel,twitter-forks/bazel,damienmg/bazel,werkt/bazel,bazelbuild/bazel,dslomov/bazel,variac/bazel,meteorcloudy/bazel,meteorcloudy/bazel,dslomov/bazel-windows,damienmg/bazel,davidzchen/bazel,twitter-forks/bazel,spxtr/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,werkt/bazel,aehlig/bazel,davidzchen/bazel,variac/bazel,safarmer/bazel,ButterflyNetwork/bazel,juhalindfors/bazel-patches,dslomov/bazel-windows,bazelbuild/bazel,ulfjack/bazel,ulfjack/bazel,werkt/bazel,cushon/bazel,dropbox/bazel,dslomov/bazel,snnn/bazel,bazelbuild/bazel,katre/bazel,dslomov/bazel-windows,snnn/bazel,safarmer/bazel,snnn/bazel,akira-baruah/bazel,spxtr/bazel,perezd/bazel,bazelbuild/bazel,davidzchen/bazel,juhalindfors/bazel-patches,variac/bazel,snnn/bazel,dslomov/bazel,ButterflyNetwork/bazel,twitter-forks/bazel,variac/bazel