update agent version
update agent version

changes from https://github.com/zalando-zmon/zmon-agent-core/pull/100

Signed-off-by: Hanno Hecker <898dba66b7f38fdb797b262b137097fc973d6485@zalando.de>

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