bump auction
bump auction

[finishes #129370089]

Submodule src/code.cloudfoundry.org/auction e31bf38..7d72c80:
  > Enable specific errors for placement issues

Signed-off-by: Joachim Valdez <f4115f6bcd6858c277581a1d9da83b9914dce2c3@us.ibm.com>

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