Test files are not checked in dot-imports

[denisvmedia]

Describe the bug
We would like to have no exceptions even for test files on dot-imports. Unfortunately, the linter rule has a hard-coded check disabled.

To Reproduce
Have a _test.go file with dot imports and try using the linter.

Expected behavior
Linter should detect those.

Additional context
We might have it as a config option set by default to ignore test files or just remove the hardcoded check and let the users re-configure their linters to ignore tests separately.

I can provide a PR if you agree.

[chavacava]

Hi @denisvmedia thanks for creating the ticket.
I think we can just remove the hardcoded check and let users use the new exclude argument available on all rules.

A PR is welcome :)