http auth and aurora tutorial

[Mauricio Garavaglia]

Hi,
the vagrant setup seems to enable http_authentication_mechanism=BASIC in
/examples/vagrant/upstart/aurora-scheduler.conf but, AFAIK, the aurora CLI
client doesn't support authentication yet. This affects the tutorial since
this is not considered and is not pretty obvious why it doesn't work. Would
it make sense to get rid of the authentication in the upstart script?