Ignore error from query-cpu-definitions
Ignore error from query-cpu-definitions

Some architectures provide the query-cpu-definitions command,
but are set to always return a "GenericError" from it :-(
Catch this & treat it as if there was an empty list of CPUs
returned

Signed-off-by: Daniel P. Berrange <bb938cf255e055ff3507f2627d214e8e62118fcf@redhat.com>

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