Fix BASH_SHFMT error

[nvuillam]

Closes #266

• fix shfmt error in python flavor
• reactivate BASH_SHFMT and DOCKERFILE_HADOLINT for Mega-Linter own sources linting

[codecov-io]

Codecov Report

Merging #267 (ef51edf) into master (2cabd48) will increase coverage by 1.14%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #267      +/-   ##
==========================================
+ Coverage   85.77%   86.92%   +1.14%     
==========================================
  Files         111      111              
  Lines        2095     2095              
==========================================
+ Hits         1797     1821      +24     
+ Misses        298      274      -24     

Impacted Files	Coverage Δ
megalinter/MegaLinter.py	88.54% <0.00%> (+0.34%)	⬆️
megalinter/reporters/UpdatedSourcesReporter.py	89.18% <0.00%> (+2.70%)	⬆️
...alinter/tests/test_megalinter/helpers/utilstest.py	99.11% <0.00%> (+9.77%)	⬆️

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[nvuillam]

Mega-Linter status: ❌ ERROR

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
⚠️ BASH	bash-exec	8		2	0.28s
✅ BASH	shellcheck	8		0	1.25s
⚠️ BASH	shfmt	8	5	5	0.34s
✅ COPYPASTE	jscpd	yes		no	2.44s
✅ CSS	stylelint	1	0	0	1.12s
✅ DOCKERFILE	dockerfilelint	1		0	0.26s
❌ DOCKERFILE	hadolint	1		1	0.88s
✅ GIT	git_diff	yes		no	0.02s
✅ JSON	eslint-plugin-jsonc	17	0	0	2.85s
✅ JSON	jsonlint	17		0	4.88s
✅ JSON	v8r	17		0	8.54s
✅ MARKDOWN	markdownlint	175	2	0	3.03s
✅ MARKDOWN	markdown-link-check	175		0	74.78s
✅ MARKDOWN	markdown-table-formatter	175	2	0	2.69s
✅ OPENAPI	spectral	1		0	1.24s
✅ PYTHON	black	123	0	0	31.16s
✅ PYTHON	flake8	123		0	2.09s
✅ PYTHON	isort	123	0	0	0.47s
✅ PYTHON	pylint	123		0	14.68s
✅ SPELL	cspell	433		0	38.96s
✅ SPELL	misspell	298	7	0	0.24s
✅ XML	xmllint	1		0	0.04s
❌ YAML	v8r	33		1	23.34s
✅ YAML	yamllint	87		0	12.86s

See errors details in artifact Mega-Linter reports on GitHub Action page

You could have the same capabilities but better runtime performances if you use a Mega-Linter flavor:

• nvuillam/mega-linter/flavors/python@v4 (42 linters)