kedro micropkg package might leak other packages

[astrojuanlu]

Description

Under some circumstances, kedro micropkg package might leak other packages. This happens because of how we're using the package finding functionality of setuptools:

kedro/kedro/framework/cli/micropkg.py

Lines 42 to 46 in a8eacd1

	setup(
	name="{name}",
	version="{version}",
	description="Micro-package `{name}`",
	packages=find_packages(),

If there's any other directory with an __init__.py, it will be considered a Python package and included.

Context

I also did a manual test to create micropkg and install it

kedro micropkg pipelines.nok
pip install dist/nok-0.1.tar.gz

This works fine but when I try to uninstall it I notice it is also in test folder which I didn't expect.

(kedro_core) pattern main % pip uninstall nok
Found existing installation: nok 0.1
Uninstalling nok-0.1:
Would remove:
/Users/Nok_Lam_Chan/miniconda3/envs/kedro_core/lib/python3.8/site-packages/nok-0.1.dist-info/*
/Users/Nok_Lam_Chan/miniconda3/envs/kedro_core/lib/python3.8/site-packages/nok/*
/Users/Nok_Lam_Chan/miniconda3/envs/kedro_core/lib/python3.8/site-packages/tests/* <- what is this?

Originally posted by @noklam in #2761 (review)

Steps to Reproduce

(TBC @noklam)

Expected Result

Only the pipeline package is installed.

Actual Result

Extraneous package is leaked.

Your Environment

• Kedro version used (pip show kedro or kedro -V):
• Python version used (python -V):
• Operating system and version:

[astrojuanlu]

We decided in #3750 to deprecate kedro micropkg so we will not do this.