Allow dummy variables for 'redeclared-assigned-name'

[BennyTheSen]

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Description

Added a check for the 'dummy-variables-rgx' option to '_check_redeclared_assign_name' as suggested in #3341 .
This results in a non failed check if a reassigned variable matches with the regex.

Not sure if this counts as bugfix or feature.

Type of Changes

	Type
✓	🐛 Bug fix
✓	✨ New feature
	🔨 Refactoring
	📜 Docs

Related Issue

[coveralls]

Coverage increased (+0.002%) to 89.888% when pulling 164c970 on BennyTheSen:feature/redeclared-assigned-name into aca6d53 on PyCQA:master.

[coveralls]

Coverage increased (+0.002%) to 89.888% when pulling 164c970 on BennyTheSen:feature/redeclared-assigned-name into aca6d53 on PyCQA:master.

[coveralls]

Coverage increased (+0.002%) to 89.895% when pulling ba7c91e on BennyTheSen:feature/redeclared-assigned-name into ab9e7c3 on PyCQA:master.

[PCManticore]

Hey @BennyTheSen Thanks for sending this PR over! Overall it looks good but we definitely need some tests as well, can you add a test for this particular change as well?

[BennyTheSen]

Hey @PCManticore . I extended the existend testcases with some cases using the option I added. Is this sufficient?

[PCManticore]

Hey @BennyTheSen Thank you, that looks great!