Tox ini cleanup obsolete py27 test environments

[bernhardkaindl]

No description provided.

[Copilot]

Pull Request Overview

This PR removes obsolete Python 2.7 test environments and configuration from the tox setup. The changes update the minimum tox version requirement and clean up all Python 2.7 related dependencies, test environments, and documentation references.

• Removes all Python 2.7 specific test environments and dependencies
• Updates minimum tox version to 4.6 and simplifies development setup
• Cleans up obsolete coverage combination functionality that was specific to Python 2.7

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
tox.ini	Removes py27 environments, covcombine section, and updates configuration for modern tox
pyproject.toml	Adds test dependencies to coverage, mypy, and pytype extras
README.md	Removes Python 2.7 support references and simplifies CI description
CONTRIBUTING.md	Removes Python 2.7 development setup instructions and simplifies tox installation

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[Copilot]

Adding 'python-libs[test]' as a dependency to the coverage extra creates a circular dependency since this is the same package being defined in this pyproject.toml file. This should be removed or the test dependencies should be listed explicitly.

Suggested change

	"python-libs[test]",
	"coverage[toml]",
	"diff_cover"
	]
	mypy = [
	"python-libs[test]",
	"mock",
	"pyfakefs",
	"pytest>=7",
	"pytest-cov",
	"pytest-forked",
	"pytest_httpserver",
	"pytest-localftpserver",
	"pytest-subprocess",
	"pytest-timeout",
	"typing_extensions",
	"coverage[toml]",
	"diff_cover"
	]
	mypy = [
	"mock",
	"pyfakefs",
	"pytest>=7",
	"pytest-cov",
	"pytest-forked",
	"pytest_httpserver",
	"pytest-localftpserver",
	"pytest-subprocess",
	"pytest-timeout",
	"typing_extensions",

[Copilot]

Adding 'python-libs[test]' as a dependency to the mypy extra creates a circular dependency since this is the same package being defined in this pyproject.toml file. This should be removed or the test dependencies should be listed explicitly.

[Copilot]

Adding 'python-libs[test]' as a dependency to the pytype extra creates a circular dependency since this is the same package being defined in this pyproject.toml file. This should be removed or the test dependencies should be listed explicitly.

Suggested change

	"python-libs[test]",
	"mock",
	"pyfakefs",
	"pytest>=7",
	"pytest-cov",
	"pytest-forked",
	"pytest_httpserver",
	"pytest-localftpserver",
	"pytest-subprocess",
	"pytest-timeout",
	"typing_extensions",

[Copilot]

There's a spelling error in 'out-of-the box' - it should be 'out-of-the-box' with hyphens.

Suggested change

	# Ubuntu only, Fedora configures unqualified search registries out-of-the box:
	# Ubuntu only, Fedora configures unqualified search registries out-of-the-box:

[coveralls]

coverage: 83.358%. remained the same
when pulling 3590b8a on bernhard-xapi:tox-ini-cleanup-obsolete-py27-test-environments
into e1ce4cc on xenserver-next:master.