Small fixes

[Lorquas]

Collecting small fixes here (work in progress):

• pep8
• truncate is safer than rm -rf
• explicit RHEL release skipping, no more not notRHEL9

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	1		0	0.09s
✅ JSON	eslint-plugin-jsonc	2	0	0	1.1s
✅ JSON	jsonlint	2		0	0.34s
✅ JSON	prettier	2	0	0	0.39s
✅ JSON	v8r	2		0	3.14s
✅ PYTHON	black	57	0	0	2.62s
✅ PYTHON	flake8	57		0	1.87s
✅ YAML	prettier	2	0	0	0.58s
✅ YAML	v8r	2		0	5.89s
✅ YAML	yamllint	2		0	0.29s

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