Speed up Python tests by caching pip downloads
Speed up Python tests by caching pip downloads

bitmonk/fabtools,sociateru/fabtools,pombredanne/fabtools,davidcaste/fabtools,n0n0x/fabtools-python,prologic/fabtools,ahnjungho/fabtools,hagai26/fabtools,fabtools/fabtools,badele/fabtools,AMOSoft/fabtools,wagigi/fabtools-python,pahaz/fabtools,ronnix/fabtools