bump cfdot
bump cfdot

[finishes #154750146]

Submodule src/code.cloudfoundry.org/cfdot 016ba984..7af419cb:
  > remove locket and bbs specific tls flags

Signed-off-by: Stephane Jolicoeur <cd2742f5f5d6c8654adbc4b36f13fda4256e0aed@pivotal.io>

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