[FR]: Ability to revert default args to pytest

[navignaw]

What is the current behavior?

The pytest.py.tmpl hard-codes some default args to pytest:

rules_py/py/private/pytest.py.tmpl

Lines 27 to 33 in 743e9a8

	args = [
	"--verbose",
	"--ignore=external/",
	# Avoid loading of the plugin "cacheprovider".
	"-p",
	"no:cacheprovider",
	]

• It sets test output to verbose, which greatly increases the output to scroll through
• It disables the cacheprovider plugin, which means that we can't use the --lf or --ff options to run the last failed or failed first.

Describe the feature

I'm curious:

1. what was the motivation for these default arguments?
2. can we make them configurable / opt-out either via environment variables? There is already the ability to add additional flags, but there doesn't seem to be a way to remove flags (at least, I'm not sure how to "un"-disable a plugin that was disabled in pytest).

[thesayyn]

This sounds like a good feature request, ideally we'd want to still add these flags, if no flags were provided, and let the call site completely override it.

I'd like to review a PR, if anyone would like to make one.