bump auction
bump auction

[finishes #138847053]

Submodule src/code.cloudfoundry.org/auction 534c76a1..5658a9ab:
  > Add expectations on distributions of LRPs

Signed-off-by: Brandon Shroyer <d370be3f39cb88690ed16d1a7b77debc20949e86@pivotal.io>

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