python: Exclude /usr/bin/2to3 script to avoid conflicts with python3-2to3
This update fixes the following issue for python:
- 739536: Exclude /usr/bin/2to3 script to avoid conflicts with python3-2to3
- 739304: change sys.platform to linux2 unconditionally
- Submitted by Todd R (TheBlackCat)
Fixed bugs
bnc#739536
Conflict between python3-2to3 and python-base
bnc#739304
python3s sys.platform is linux3