upload test requires pypirc to avoid password prompt

[dpkp]

Test suite hangs because an upload test prompts for a user-supplied password. This PR uses the pypirc context manager to supply a default password.

See:
https://travis-ci.org/pypiserver/pypiserver/builds/129511699
https://travis-ci.org/pypiserver/pypiserver/builds/126811063
https://travis-ci.org/pypiserver/pypiserver/builds/128599164
https://travis-ci.org/pypiserver/pypiserver/builds/130325284

[mplanchard]

I'm not sure supplying a default password is the right way to solve this. I started looking into this last week, but haven't found the source of the issue. The test that is hanging should not be requesting a password, as it's set to drop all auth.

[dpkp]

It was caused by a change in setuptools. See:

https://github.com/pypa/setuptools/blob/master/CHANGES.rst#v20100
pypa/setuptools#555

[dpkp]

I updated the username and password to be empty strings, which I believe is what you're attempting to test (no password required).

The other "fix" would be to attempt to set an older setuptools version in your tox deps configuration.

[mplanchard]

Awesome. I thought it might be something in setuptools, but I have been quite busy and unable to look into in depth yet. Thanks for figuring it out! I'll try to get this reviewed sometime today, along with your other PRs.

[mplanchard]

Looks good. Merging.

[ankostis]

Thanks @dpkp for this fix, you really nailed it!