bump inigo
bump inigo

[finishes #140766303]

Submodule src/code.cloudfoundry.org/inigo 27ffe3e..d1297c7:
  > complete the update of go-loggregator

Signed-off-by: Chris Piraino <f047703f03f13cc8e1b226aa8ba85c2dfc238f94@pivotal.io>

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