location-verification: Alignment of errors with Commonalities

[jlurien]

What type of PR is this?

• enhancement/feature

What this PR does / why we need it:

• Errors according to new Commonalities guidelines
• Now all errors tested in test plan are explicitly indicated in the spec
• Added some descriptions to make linter happy

Which issue(s) this PR fixes:

Fixes #214

[github-actions[bot]]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	2		0	0.03s
✅ OPENAPI	spectral	3		0	4.61s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ REPOSITORY	secretlint	yes		no	0.79s
✅ YAML	yamllint	3		0	0.57s

See detailed report in MegaLinter reports

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