Add tear down for external_integration_test
Add tear down for external_integration_test

For #2409.

PiperOrigin-RevId: 156986600

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