Let Starlark tests inherit env variables (#15217)

Adds an inherited_environment field to testing.TestEnvironment to allow
Starlark rules to implement the equivalent of the native rules'
`env_inherit` attribute.

Work towards #7364. To fully resolve that issue, it remains to handle
executable non-test rules.

RELNOTES: Starlark test rules can use the new inherited_environment
parameter of testing.TestEnvironment to specify environment variables
whose values should be inherited from the shell environment.

Closes #14849.

PiperOrigin-RevId: 439277689

Cherry-pick contains parts of:

Delete non-interning, non-singleton @AutoCodec.

PiperOrigin-RevId: 411683398

Cherry-pick makes the following additional changes:

- Replace use of ImmutableMap.buildKeepingLast with .copyOf

Co-authored-by: Chenchu Kolli <ckolli@google.com>
18 files changed
tree: b84055b8fd00030c4fa6b768dea1d6aed4e5a0e9
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODE_OF_CONDUCT.md
  15. CODEBASE.md
  16. CODEOWNERS
  17. combine_distfiles.py
  18. combine_distfiles_to_tar.sh
  19. compile.sh
  20. CONTRIBUTING.md
  21. CONTRIBUTORS
  22. distdir.bzl
  23. distdir_deps.bzl
  24. ISSUE_TEMPLATE.md
  25. LICENSE
  26. README.md
  27. SECURITY.md
  28. WORKSPACE
  29. WORKSPACE.bzlmod
README.md

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