set the hostname to a resolvable entity
set the hostname to a resolvable entity

- on ubuntu/AWS, this isn't set to a resolvable entity by default
- this causes gethostbyname2 to fail
- gethostbyname2 is used by mesos

phungmanhcuong/Appolo,Capgemini/Apollo,enxebre/Apollo,atsaki/Apollo,ravbaba/Apollo,enxebre/Apollo,phungmanhcuong/Appolo,ravbaba/Apollo,Capgemini/Apollo,Capgemini/Apollo,atsaki/Apollo