[Fuchsia] Enable the http_service_tests suite on CQ.

Following various fixes, the test suite is now stable on FYI
bots. This test suite is quite small so the overhead should be
minimal.

Bug: 896884
Change-Id: I44821e78b8807b6593d107c0d903f1130c1a3aed
Reviewed-on: https://chromium-review.googlesource.com/c/1366261
Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Fabrice de Gans-Riberi <fdegans@chromium.org>
Cr-Commit-Position: refs/heads/master@{#614494}
2 files changed