bump route-emitter
bump route-emitter

[finishes #139956815]

Submodule src/code.cloudfoundry.org/route-emitter a4580f2c..41b89f18:
  > Make sure we wait for the event to be cached by asserting on the logs
  > The use of atomic values can lead to race conditions

Signed-off-by: John Shahid <d5f6a919b5b5e6a4f7f09f1adf45e90e5c38b58e@gmail.com>

cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release,cloudfoundry-incubator/diego-release