Mention --mesos_authentication Marathon flag. (#4541)
Mention --mesos_authentication Marathon flag. (#4541)

I found no mention of this flag in any documentation. Based on my experience, Marathon 1.3 does not attempt to authenticate at all unless this flag is set.
meln1k/marathon,Caerostris/marathon,gsantovena/marathon,gsantovena/marathon,mesosphere/marathon,janisz/marathon,gsantovena/marathon,janisz/marathon,Caerostris/marathon,natemurthy/marathon,meln1k/marathon,mesosphere/marathon,guenter/marathon,Caerostris/marathon,mesosphere/marathon,gsantovena/marathon,guenter/marathon,mesosphere/marathon,janisz/marathon,janisz/marathon,Caerostris/marathon,janisz/marathon,natemurthy/marathon,natemurthy/marathon,meln1k/marathon,Caerostris/marathon,meln1k/marathon,guenter/marathon,guenter/marathon,mesosphere/marathon,guenter/marathon,gsantovena/marathon,meln1k/marathon