bump diego-logging-client
bump diego-logging-client

[finishes #152423043]

Submodule src/code.cloudfoundry.org/diego-logging-client 60fa865..e09fb57:
  > Create NOTICE
  > Create LICENSE

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

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