Fix Windows paths by using posixpath for URL building

[jbw]

This PR fixes a bug in Windows where api_kwargs builds an invalid URL.

#57

[hjacobs]

Thanks, but this also removes the normpath call which IMHO should be added back.

[jbw]

normpath

@hjacobs thanks for picking this project up by the way.

The problem with normpath is is it meant for file system interactivity and will handle separators depending on the OS. Using normpath here will introduce the same problem.

I guess the larger problem here is that URLs are being created with OS path modules. I'm not close with the code base so, what benefit does normpath have in this part of code for constructing URLs?

[hjacobs]

I just tested it --- it won't work without normpath! I'm now adding a function to do the URL join without filesystem/posix functions.

[hjacobs]

I implemented a new utility function to stop using filesystem path functions: #59

[jbw]

I implemented a new utility function to stop using filesystem path functions: #59

Thanks! It is a shame this won't solve my problem in the original pykube repo which i currently depend on!

[hjacobs]

@jbw what makes you still depend on the original pykube repo (https://github.com/kelproject/pykube)?

[jbw]

@hjacobs i'm using Luigi (https://github.com/spotify/luigi) and it's Kubernetes integration (https://github.com/spotify/luigi/blob/master/luigi/contrib/kubernetes.py). It should be the case i can simply substitute pykube for pykube-ng (assuming the api is the same). I'm going to test this out and see.