Provider does not need to set username
Provider does not need to set username

If the user sets this themselves, vagrant will pick it up. If the user
does not set it, vagrant will set a default. All this works without any
code on our end.

brk3/vagrant-libvirt,electrofelix/vagrant-libvirt,JulianVolodia/vagrant-libvirt,joejulian/vagrant-libvirt,gbriones1/vagrant-libvirt,electrofelix/vagrant-libvirt,joejulian/vagrant-libvirt,JulianVolodia/vagrant-libvirt,timhughes/vagrant-libvirt,bexelbie/vagrant-libvirt,swizzley/vagrant-libvirt,electrofelix/vagrant-libvirt,sjfloat/vagrant-libvirt,pradels/vagrant-libvirt,mandre/vagrant-libvirt,Paulche/vagrant-libvirt,moozer/vagrant-libvirt,pronix/vagrant-libvirt,leoh0/vagrant-libvirt,skamithi/vagrant-libvirt,infernix/vagrant-libvirt,sendgrid-ops/vagrant-libvirt,alexblackie/vagrant-libvirt,dustymabe/vagrant-libvirt,infernix/vagrant-libvirt,leoh0/vagrant-libvirt,skamithi/vagrant-libvirt,freexploit/vagrant-libvirt,moozer/vagrant-libvirt,bexelbie/vagrant-libvirt,vagrant-libvirt/vagrant-libvirt,gbriones1/vagrant-libvirt,d0c-s4vage/vagrant-libvirt,sjfloat/vagrant-libvirt,Paulche/vagrant-libvirt,pronix/vagrant-libvirt,alexblackie/vagrant-libvirt,d0c-s4vage/vagrant-libvirt,volago/vagrant-libvirt,mandre/vagrant-libvirt,swizzley/vagrant-libvirt,brk3/vagrant-libvirt,fxkr/vagrant-libvirt,fxkr/vagrant-libvirt,timhughes/vagrant-libvirt,sendgrid-ops/vagrant-libvirt,tkrille/vagrant-libvirt,freexploit/vagrant-libvirt,infernix/vagrant-libvirt,dustymabe/vagrant-libvirt,tkrille/vagrant-libvirt,pradels/vagrant-libvirt,vagrant-libvirt/vagrant-libvirt,volago/vagrant-libvirt,vagrant-libvirt/vagrant-libvirt