src/main/java/com/google/devtools/build/docgen/templates/attributes/test/env_inherit.html

<p><code>List of strings; optional</code></p>

<p>Specifies additional environment variables to inherit from the
  external environment when the test is executed by <code>bazel test</code>.
</p>

<p>
  This attribute only applies to native rules, like <code>cc_test</code>, <code>py_test</code>,
  and <code>sh_test</code>.  It does not apply to Starlark-defined test rules.
</p>