Move s390 test to Cron [ci skip]
Move s390 test to Cron [ci skip]

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