Using library from Windows environments is broken because os.path

[novama]

Is your feature request related to a problem? Please describe. The os.path uses the current OS path separator and rules to adapt its functions. MinIO uses posix format.

Describe the solution you'd like Changing the import from os.path to posixpath will prevent this problem

Describe alternatives you've considered There are no alternetives to prevent the problem to happen in Windows environments.

Additional context Example of a test execution from Windows: