Fix TypeError: 'str' object is not callable in LocalPath.__fspath__

[moskupols]

So basically there was a bug in LocalPath.__fspath__: we tried to call self._path() where _path is a property.
I solved the problem by just inheriting the implementation from Path, as Path.__fspath__ is implemented correctly:

    def __fspath__(self):                                                                                                                          
        """Added for Python 3.6 support"""                                                                                                         
        return str(self)    

[henryiii]

Assuming it passes tests, this looks fine to me. Thanks!

[coveralls]

Coverage decreased (-0.2%) to 28.915% when pulling d30298a on moskupols:fix-local-path-fspath into 2976a0c on tomerfiliba:master.

[moskupols]

The tests failed, but I don't think it's because of my patch: seems like there's a problem involving pypy, paramiko, and OpenSSL 1.0.2 no longer being supported.

[moskupols]

Created a separate issue for the build problem: #523

[henryiii]

Now questioning to myself why we needed this on LocalPath if Path already had it? @koreno I think you added #498? Not that it hurts.

[koreno]

Now questioning to myself why we needed this on LocalPath if Path already had it? @koreno I think you added #498? Not that it hurts.

not me, @KOLANICH did. indeed it seems redundant, since it's already on the base class since 2b5a82a