Add filterNodeArgumentsForWorkerThreads option

[ghost]

Adds a configuration option threadArgumentsFilter for filtering nodeArguments sent to worker threads. The option is supported only in config files due to accepting a function. When threads are disabled, the filter is ignored and the full unfiltered list of arguments is sent to worker processes.

main is currently failing tests. This patch adds no new failures. All new tests pass. The new feature is documented in 06-configuration.md.

This enabled me to use natives syntax in threads.

Closes #3207.

[ghost]

This check is failing:

Install and test AVA / Install dependencies without using a lockfile (pull_request)

I'm not clear why, and the new tests passed in the log. Is it possible this failure is unrelated?

[novemberborn]

Nice! Don't worry about unrelated test breakage, I can resolve those.

Addressed.

[novemberborn]

The Linux tests compare reporter output against a known-good version. That specific suite only runs on Linux because it's finicky enough as it is, without adding other environments into the mix.

However, it's failing through what looks like a change in this PR:

  �[31m✘ Internal error�[39m
  TypeError: execArgv is not iterable

  �[90mTypeError: execArgv is not iterable�[39m
  �[90m    at createWorker (/lib/fork.js:49:18)�[39m
  �[90m    at loadFork (/lib/fork.js:79:39)�[39m
  �[90m    at pMap.concurrency.concurrency (/lib/api.js:285:20)�[39m
  �[90m    at /node_modules/p-map/index.js:109:26�[39m

[ghost]

Not really sure what to change here but I'm moving toward an internal test runner anyway so I'm just dropping it.

[novemberborn]

That's fine, I can take over.

[novemberborn]

This default assignment is still required.