* added tests for fs.promises.chown() for check if function exists and updating gid/uid for a file
* update to pass lint tests
* cleaned up code. replaced all callbacks with promises in new test.
* Revert "lint tests fix"
This reverts commit 3c256124cf, reversing
changes made to 71a6f514fc.
* Revert "cleaned up code. replaced all callbacks with promises in new test."
This reverts commit 71a6f514fc.
* Made requested changes.