Fix incorrect validations on apiEndpoints Ref https://github.com/kubernetes-incubator/kube-aws/issues/520#issuecomment-292885972
Fix incorrect validations on apiEndpoints
Ref https://github.com/kubernetes-incubator/kube-aws/issues/520#issuecomment-292885972

camilb/kube-aws,HotelsDotCom/kube-aws,everpeace/kube-aws,iflix-letsplay/kube-aws,everpeace/kube-aws,danielfm/kube-aws,c-knowles/kube-aws,HotelsDotCom/kube-aws,iflix-letsplay/kube-aws,danielfm/kube-aws,c-knowles/kube-aws,kubernetes-incubator/kube-aws,mumoshu/kube-aws,kubernetes-incubator/kube-aws,mumoshu/kube-aws,camilb/kube-aws