Fix existing git file finder test
Fix existing git file finder test

Make the test compliant with file finder spec
(although integration.find_files is not spec compliant yet,
because it defaults to '.' with path is empty)

RonnyPfannschmidt/setuptools_scm,pypa/setuptools_scm,RonnyPfannschmidt/setuptools_scm,pypa/setuptools_scm