ApiGateway::DomainName CertificateArn fix (#996)
ApiGateway::DomainName CertificateArn fix (#996)

- Remove CertificateArn requirement from ApiGateway:DomainName to deploy
ApiGateway REGION deployment w/ssl
pas256/troposphere,ikben/troposphere,cloudtools/troposphere,johnctitus/troposphere,ikben/troposphere,cloudtools/troposphere,johnctitus/troposphere,pas256/troposphere