bump linux-circus
bump linux-circus

Submodule src/github.com/cloudfoundry-incubator/linux-circus 896b9c0..568edc6:
  > Do I hear a git?!? [#76320826]

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