Emit staging logs to loggregator

Signed-off-by: Johannes Tuchscherer <jtuchscherer@pivotallabs.com>
Make fake emitter like real emitter

Signed-off-by: Johannes Tuchscherer <jtuchscherer@pivotallabs.com>
Merge pull request #68 from cloudfoundry/loggregator_staging_logs

Loggregator staging logs