Update Travis configuration
Update Travis configuration

Signed-off-by: Stéphane Graber <089afc6d81f66f1168a9849e15660feae286e024@ubuntu.com>

smoser/lxd,stgraber/lxd,jensg-st/lxd,jsavikko/lxd,stgraber/lxd,smoser/lxd,beni55/lxd,lxc/lxd,lxc/lxd,lxc/lxd,rrva/lxd,atxwebs/lxd,rrva/lxd,dvbportal/osx-lxd,jumpstarter-io/lxd,ollie314/lxd,pcdummy/lxd,georghopp/lxd,ericsnowcurrently/lxd,erikmack/lxd,pcdummy/lxd,stgraber/lxd,sl1pm4t/lxd,techtonik/lxd,ollie314/lxd,dvbportal/osx-lxd,atxwebs/lxd,hallyn/lxd,jsavikko/lxd,hallyn/lxd,ollie314/lxd,rcj4747/lxd,hallyn/lxd,stgraber/lxd,lxc/lxd,mikemccracken/lxd,tych0/lxd,pcdummy/lxd,benaryorg/lxd,rcj4747/lxd,beni55/lxd,Skarlso/lxd,ericsnowcurrently/lxd,mjeanson/lxd,achanda/lxd,chrisglass/lxd,stgraber/lxd,Skarlso/lxd,akshaykarle/lxd,benaryorg/lxd,mjeanson/lxd,basvanbeek/lxd,Malizor/lxd,erikmack/lxd,mikemccracken/lxd,jensg-st/lxd,atxwebs/lxd,georghopp/lxd,hallyn/lxd,akshaykarle/lxd,rrva/lxd,beni55/lxd,akshaykarle/lxd,erikmack/lxd,yura-pakhuchiy/lxd,chrisglass/lxd,georghopp/lxd,techtonik/lxd,dustinkirkland/lxd,rcj4747/lxd,hallyn/lxd,Skarlso/lxd,benaryorg/lxd,atxwebs/lxd,lxc/lxd,dustinkirkland/lxd,hallyn/lxd,achanda/lxd,mjeanson/lxd,yura-pakhuchiy/lxd,basvanbeek/lxd,smoser/lxd,jumpstarter-io/lxd,stgraber/lxd,Skarlso/lxd,ericsnowcurrently/lxd,Malizor/lxd,sl1pm4t/lxd,jensg-st/lxd,tych0/lxd,dustinkirkland/lxd,lxc/lxd,lxc/lxd,stgraber/lxd,jumpstarter-io/lxd,dvbportal/osx-lxd,techtonik/lxd,achanda/lxd,mikemccracken/lxd,basvanbeek/lxd,sl1pm4t/lxd,Malizor/lxd,tych0/lxd,chrisglass/lxd,jsavikko/lxd,yura-pakhuchiy/lxd