python3-pip: Update to 1.4.1 and one additional bugfix

This update fixes the following issues with python3-pip:
- bnc#850341: Fixed crash because of urllib problem
- Fix alternative link in buildroot
- update to 1.4.1
* Fixed issues with installing from pybundle files.
* Fixed error when sysconfig module throws an exception.
* Don't ignore already installed pre-releases.
* Fixes related to upgrading setuptools.
* Fixes so that --download works with wheel archives.
* Fixes related to recognizing and cleaning global build dirs.

Fixed bugs
bnc#850341
python3-pip crashes because of urllib problem
Selected Binaries
python3-pip
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