Add --open-files to pytest options in setup.cfg
Add --open-files to pytest options in setup.cfg

lpsinger/astropy,dhomeier/astropy,astropy/astropy,dhomeier/astropy,larrybradley/astropy,mhvk/astropy,aleksandr-bakanov/astropy,saimn/astropy,lpsinger/astropy,larrybradley/astropy,StuartLittlefair/astropy,mhvk/astropy,mhvk/astropy,pllim/astropy,StuartLittlefair/astropy,larrybradley/astropy,saimn/astropy,pllim/astropy,aleksandr-bakanov/astropy,astropy/astropy,mhvk/astropy,StuartLittlefair/astropy,mhvk/astropy,larrybradley/astropy,astropy/astropy,saimn/astropy,aleksandr-bakanov/astropy,pllim/astropy,larrybradley/astropy,pllim/astropy,lpsinger/astropy,astropy/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,dhomeier/astropy,dhomeier/astropy,lpsinger/astropy,saimn/astropy,lpsinger/astropy,pllim/astropy,saimn/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,astropy/astropy