Changed normalization test which failed on Travis due to numerical issues.
Changed normalization test which failed on Travis due to numerical issues.

AustereCuriosity/astropy,StuartLittlefair/astropy,kelle/astropy,dhomeier/astropy,stargaser/astropy,lpsinger/astropy,bsipocz/astropy,larrybradley/astropy,joergdietrich/astropy,StuartLittlefair/astropy,tbabej/astropy,joergdietrich/astropy,astropy/astropy,pllim/astropy,astropy/astropy,bsipocz/astropy,funbaker/astropy,MSeifert04/astropy,AustereCuriosity/astropy,saimn/astropy,stargaser/astropy,dhomeier/astropy,kelle/astropy,kelle/astropy,pllim/astropy,pllim/astropy,bsipocz/astropy,pllim/astropy,saimn/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,bsipocz/astropy,tbabej/astropy,DougBurke/astropy,saimn/astropy,StuartLittlefair/astropy,AustereCuriosity/astropy,aleksandr-bakanov/astropy,mhvk/astropy,dhomeier/astropy,DougBurke/astropy,larrybradley/astropy,saimn/astropy,mhvk/astropy,AustereCuriosity/astropy,joergdietrich/astropy,kelle/astropy,lpsinger/astropy,kelle/astropy,lpsinger/astropy,funbaker/astropy,tbabej/astropy,MSeifert04/astropy,StuartLittlefair/astropy,dhomeier/astropy,saimn/astropy,funbaker/astropy,mhvk/astropy,pllim/astropy,tbabej/astropy,MSeifert04/astropy,mhvk/astropy,MSeifert04/astropy,aleksandr-bakanov/astropy,AustereCuriosity/astropy,astropy/astropy,lpsinger/astropy,larrybradley/astropy,astropy/astropy,DougBurke/astropy,StuartLittlefair/astropy,stargaser/astropy,stargaser/astropy,astropy/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,mhvk/astropy,funbaker/astropy,joergdietrich/astropy,dhomeier/astropy,DougBurke/astropy,tbabej/astropy,larrybradley/astropy,joergdietrich/astropy