conf: Ensure that new devices are added to conf copy function
conf: Ensure that new devices are added to conf copy function

Use the correct type and get rid of "default" label in switch to make
the compiler complain if a new device type is added.

datto/libvirt,elmarco/libvirt,taget/libvirt,trainstack/libvirt,taget/libvirt,trainstack/libvirt,fabianfreyer/libvirt,iam-TJ/libvirt,eskultety/libvirt,jardasgit/libvirt,libvirt/libvirt,jfehlig/libvirt,VenkatDatta/libvirt,crobinso/libvirt,elmarco/libvirt,zhlcindy/libvirt-1.1.4-maintain,agx/libvirt,olafhering/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,elmarco/libvirt,shugaoye/libvirt,trainstack/libvirt,taget/libvirt,cbosdo/libvirt,VenkatDatta/libvirt,olafhering/libvirt,datto/libvirt,datto/libvirt,jfehlig/libvirt,rlaager/libvirt,shugaoye/libvirt,andreabolognani/libvirt,elmarco/libvirt,jardasgit/libvirt,jardasgit/libvirt,iam-TJ/libvirt,zippy2/libvirt,eskultety/libvirt,agx/libvirt,eskultety/libvirt,fabianfreyer/libvirt,siboulet/libvirt-openvz,zhlcindy/libvirt-1.1.4-maintain,crobinso/libvirt,crobinso/libvirt,iam-TJ/libvirt,siboulet/libvirt-openvz,cbosdo/libvirt,siboulet/libvirt-openvz,andreabolognani/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,iam-TJ/libvirt,jfehlig/libvirt,zippy2/libvirt,nertpinx/libvirt,andreabolognani/libvirt,crobinso/libvirt,jardasgit/libvirt,zhlcindy/libvirt-1.1.4-maintain,rlaager/libvirt,andreabolognani/libvirt,trainstack/libvirt,trainstack/libvirt,VenkatDatta/libvirt,agx/libvirt,cbosdo/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,cbosdo/libvirt,agx/libvirt,siboulet/libvirt-openvz,iam-TJ/libvirt,agx/libvirt,libvirt/libvirt,datto/libvirt,trainstack/libvirt,trainstack/libvirt,shugaoye/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,elmarco/libvirt,cbosdo/libvirt,olafhering/libvirt,olafhering/libvirt,taget/libvirt,siboulet/libvirt-openvz,rlaager/libvirt,zhlcindy/libvirt-1.1.4-maintain,taget/libvirt,datto/libvirt,iam-TJ/libvirt,nertpinx/libvirt,jfehlig/libvirt,zippy2/libvirt,libvirt/libvirt,rlaager/libvirt,zhlcindy/libvirt-1.1.4-maintain,eskultety/libvirt,zippy2/libvirt,rlaager/libvirt,nertpinx/libvirt,libvirt/libvirt,iam-TJ/libvirt,nertpinx/libvirt,eskultety/libvirt