fix skipper routes being able to do DNS based traffic switching as used in stups setups with route53 weighted records
fix skipper routes being able to do DNS based traffic switching as used in stups setups with route53 weighted records

Signed-off-by: Sandor Szücs <f0c8058f71fcfe5afd63dc9873b61c5120cb7f65@zalando.de>

zalando-incubator/kubernetes-on-aws,zalando-incubator/kubernetes-on-aws,zalando-incubator/kubernetes-on-aws