This update for python-pyzmq fixes the following issues:

- Update to version 17.1.2 (bsc#1186945)
* Fix possible hang when working with asyncio
* Remove some outdated workarounds for old Cython versions
* Fix some compilation with custom compilers
* Remove unneeded link of libstdc++ on PyPy

This update was imported from the SUSE:SLE-15:Update update project.