Summary: Still has two failing tests, but will visit those after this diff is checked in.

Test Plan:
  `bazel test --config=libc++ --keep_going //...`
  `bazel test --config=clang --keep_going //...`
  `bazel test --config=gcc --keep_going //...`

Reviewers: michelle, oazizi, philkuz, #engineering

Reviewed By: oazizi, #engineering

Differential Revision: https://phab.corp.pixielabs.ai/D3178

GitOrigin-RevId: 1d08f95bf9e7b10eea946b2b324fc1f3af85a976