Update the command to run to update Chronos

-c updates the local directory. To sync to Chronos from a repo you want to omit the -c
Remove defaultJobOwner

Never used and is misleading
Merge pull request #245 from fuziontech/patch-1

Remove -c flag to sync Chronos
Merge pull request #247 from fuziontech/master

Remove defaultJobOwner
Build fix.
Limit test logging.
Update to Mesos 0.20 and add DockerInfo