[aur-requests] merge request: merge python2-oslo-sphinx into python-oslosphinx

[Lance Chen]

Hello TUs,

Since upstream had renamed oslo.sphinx to oslosphinx,
I think it would be less confused that we rename python2-oslo-sphinx
to python-oslosphinx. Split packages are also applied to support both
python and python2. Please merge
https://aur.archlinux.org/packages/python2-oslo-sphinx/ into
https://aur.archlinux.org/packages/python2-oslosphinx/.
Thank you very much.

Cheers,
Lance Chen