Add libvirt to travis
Add libvirt to travis

dx9/cattle,cloudnautique/cloud-cattle,cjellick/cattle,alena1108/cattle,wlan0/cattle,jimengliu/cattle,ibuildthecloud/dstack,kaos/cattle,cloudnautique/cloud-cattle,imikushin/cattle,ubiquityhosting/rancher_cattle,rancherio/cattle,kaos/cattle,ibuildthecloud/dstack,cloudnautique/cattle,stresler/cattle,vincent99/cattle,OnePaaS/cattle,sonchang/cattle,stresler/cattle,Cerfoglg/cattle,dx9/cattle,alena1108/cattle,hibooboo2/cattle,willseward/cattle,cjellick/cattle,sonchang/cattle,OnePaaS/cattle,willseward/cattle,prachidamle/cattle,Cerfoglg/cattle,gpndata/cattle,gpndata/cattle,imikushin/cattle,yasker/cattle,imikushin/cattle,prachidamle/cattle,willseward/cattle,yasker/cattle,imikushin/cattle,kaos/cattle,sonchang/cattle,ibuildthecloud/dstack,jimengliu/cattle,Cerfoglg/cattle,dx9/cattle,cloudnautique/cloud-cattle,ubiquityhosting/rancher_cattle,hibooboo2/cattle,wlan0/cattle,sonchang/cattle,jimengliu/cattle,prachidamle/cattle,cloudnautique/cloud-cattle,gpndata/cattle,OnePaaS/cattle,ubiquityhosting/rancher_cattle,rancherio/cattle,cjellick/cattle,cloudnautique/cattle,hibooboo2/cattle,yasker/cattle,prachidamle/cattle,alena1108/cattle,ibuildthecloud/dstack,rancher/cattle,vincent99/cattle,gpndata/cattle,ubiquityhosting/rancher_cattle,rancherio/cattle,dx9/cattle,cjellick/cattle,willseward/cattle,stresler/cattle,cloudnautique/cattle,OnePaaS/cattle,rancher/cattle,rancher/cattle,vincent99/cattle,wlan0/cattle,cloudnautique/cattle