Fix integration tests when running with IPv6.#579

Merged

mum4k merged 3 commits intoenvoyproxy:masterfrom

mum4k:fix-ipv6-integration

Dec 2, 2020

Commits on Dec 1, 2020

Commits on Dec 2, 2020

Reverting change to sleep time in nighthawk_test_server.py.
mum4k
committed