[modular][testing] Teach TestHarness to inject a service directory into environment

Refactor:
* |TestHarnesSpec.env_config| provides a way for tests to configure what
goes into the environment. This deprecates the |services_to_inherit| and
|services_to_inject| fields.

Changes:
* |TestHarnessSpec.env_config.service_dir| is a directory of services a
test can provide to the test harness environment.
TestHarness.ConnectToEnvironmentService() can be used to connect to the
env services.

Test:
* PseudoDirServerTest tests OpenAt() and Serve()
* TestHarnessImplTest.EnvironmentServices tests that the test-provided
directory of services are available in the test harness environment.

MF-390 #done

Change-Id: I717313db03493b292d5cd7b79788f56d3d2e5278
11 files changed
tree: 75e2d21910568b71152e5e0a65b8f2fe8326d76b
  1. boards/
  2. build/
  3. buildtools/
  4. bundles/
  5. docs/
  6. examples/
  7. garnet/
  8. infra/
  9. peridot/
  10. products/
  11. scripts/
  12. sdk/
  13. src/
  14. third_party/
  15. tools/
  16. zircon/
  17. .clang-format
  18. .clang-tidy
  19. .dir-locals.el
  20. .gitattributes
  21. .gitignore
  22. .gn
  23. AUTHORS
  24. BUILD.gn
  25. CODE_OF_CONDUCT.md
  26. CONTRIBUTING.md
  27. LICENSE
  28. OWNERS
  29. PATENTS
  30. README.md
  31. rustfmt.toml
README.md

Fuchsia

Pink + Purple == Fuchsia (a new operating system)

What is Fuchsia?

Fuchsia is a modular, capability-based operating system. Fuchsia runs on modern 64-bit Intel and ARM processors.

Fuchsia is an open source project with a code of conduct that we expect everyone who interacts with the project to respect.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See the documentation.