Error out on missing machine type in machine configs
Error out on missing machine type in machine configs

Commit f1a89a8 allowed parsing configs from /etc/libvirt
without validating the emulator capabilities.

Check for the presence of os->type.machine even if the
VIR_DOMAIN_DEF_PARSE_SKIP_OSTYPE_CHECKS flag is set,
otherwise the daemon can crash on carelessly crafted input
in the config directory.

https://bugzilla.redhat.com/show_bug.cgi?id=1267256

nertpinx/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,taget/libvirt,fabianfreyer/libvirt,taget/libvirt,fabianfreyer/libvirt,datto/libvirt,jfehlig/libvirt,libvirt/libvirt,libvirt/libvirt,crobinso/libvirt,crobinso/libvirt,jardasgit/libvirt,crobinso/libvirt,taget/libvirt,eskultety/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,taget/libvirt,olafhering/libvirt,jardasgit/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,taget/libvirt,datto/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,andreabolognani/libvirt,nertpinx/libvirt,libvirt/libvirt,eskultety/libvirt,eskultety/libvirt,jardasgit/libvirt,jardasgit/libvirt,olafhering/libvirt,libvirt/libvirt,zippy2/libvirt,fabianfreyer/libvirt,olafhering/libvirt,jfehlig/libvirt,crobinso/libvirt,nertpinx/libvirt,jardasgit/libvirt,zippy2/libvirt,VenkatDatta/libvirt,olafhering/libvirt,nertpinx/libvirt,datto/libvirt,eskultety/libvirt,zippy2/libvirt,andreabolognani/libvirt,zippy2/libvirt,datto/libvirt,VenkatDatta/libvirt,jfehlig/libvirt,eskultety/libvirt,datto/libvirt,nertpinx/libvirt