qemuhelptest: Add new qemuCap flag
qemuhelptest: Add new qemuCap flag

Latest patch a1a83c587443 introduces new qemu capability flag
QEMU_CAPS_FSDEV_READONLY. However, it was missing in qemuhelptest
making test for qemu-1.0 fail.

olafhering/libvirt,nertpinx/libvirt,wiedi/libvirt,wiedi/libvirt,emaste/libvirt,andreabolognani/libvirt,zippy2/libvirt,danwent/libvirt-ovs,eskultety/libvirt,emaste/libvirt,andreabolognani/libvirt,datto/libvirt,emaste/libvirt,elmarco/libvirt,jfehlig/libvirt,warewolf/libvirt,fabianfreyer/libvirt,rlaager/libvirt,jfehlig/libvirt,zippy2/libvirt,siboulet/libvirt-openvz,warewolf/libvirt,fabianfreyer/libvirt,novel/fbsd-libvirt,bjzhang/libvirt,rmarwaha/libvirt,novel/fbsd-libvirt,datto/libvirt,danwent/libvirt-ovs,iam-TJ/libvirt,rmarwaha/libvirt,taget/libvirt,nertpinx/libvirt,foomango/libvirt,warewolf/libvirt,wiedi/libvirt,dumbbell/libvirt,zhlcindy/libvirt-1.1.4-maintain,crobinso/libvirt,nertpinx/libvirt,elmarco/libvirt,iam-TJ/libvirt,foomango/libvirt,libvirt/libvirt,rmarwaha/libvirt1,trainstack/libvirt,andreabolognani/libvirt,agx/libvirt,trainstack/libvirt,libvirt/libvirt,novel/fbsd-libvirt,shugaoye/libvirt,warewolf/libvirt,jeckersb/libvirt,agx/libvirt,iam-TJ/libvirt,rlaager/libvirt,nertpinx/libvirt,andreabolognani/libvirt,shugaoye/libvirt,novel/fbsd-libvirt,warewolf/libvirt,shugaoye/libvirt,bjzhang/libvirt,jeckersb/libvirt,cbosdo/libvirt,wiedi/libvirt,trainstack/libvirt,agx/libvirt,dumbbell/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,emaste/libvirt,iam-TJ/libvirt,jeckersb/libvirt,crobinso/libvirt,trainstack/libvirt,VenkatDatta/libvirt,rlaager/libvirt,trainstack/libvirt,novel/fbsd-libvirt,jeckersb/libvirt,novel/fbsd-libvirt,VenkatDatta/libvirt,siboulet/libvirt-openvz,emaste/libvirt,jfehlig/libvirt,cbosdo/libvirt,libvirt/libvirt,dumbbell/libvirt,cbosdo/libvirt,danwent/libvirt-ovs,shugaoye/libvirt,warewolf/libvirt,trainstack/libvirt,emaste/libvirt,taget/libvirt,eskultety/libvirt,rmarwaha/libvirt1,eskultety/libvirt,rlaager/libvirt,foomango/libvirt,zhlcindy/libvirt-1.1.4-maintain,eskultety/libvirt,siboulet/libvirt-openvz,olafhering/libvirt,eskultety/libvirt,jeckersb/libvirt,VenkatDatta/libvirt,dumbbell/libvirt,foomango/libvirt,wiedi/libvirt,rmarwaha/libvirt1,fabianfreyer/libvirt,dumbbell/libvirt,crobinso/libvirt,elmarco/libvirt,cbosdo/libvirt,novel/fbsd-libvirt,taget/libvirt,jardasgit/libvirt,bjzhang/libvirt,iam-TJ/libvirt,zhlcindy/libvirt-1.1.4-maintain,cbosdo/libvirt,iam-TJ/libvirt,crobinso/libvirt,agx/libvirt,warewolf/libvirt,taget/libvirt,shugaoye/libvirt,jardasgit/libvirt,danwent/libvirt-ovs,bjzhang/libvirt,novel/fbsd-libvirt,elmarco/libvirt,rmarwaha/libvirt1,andreabolognani/libvirt,emaste/libvirt,datto/libvirt,jardasgit/libvirt,wiedi/libvirt,bjzhang/libvirt,rlaager/libvirt,rmarwaha/libvirt,taget/libvirt,rmarwaha/libvirt,wiedi/libvirt,zhlcindy/libvirt-1.1.4-maintain,jardasgit/libvirt,rmarwaha/libvirt1,jeckersb/libvirt,agx/libvirt,foomango/libvirt,olafhering/libvirt,fabianfreyer/libvirt,danwent/libvirt-ovs,jeckersb/libvirt,rmarwaha/libvirt1,rmarwaha/libvirt,VenkatDatta/libvirt,dumbbell/libvirt,zippy2/libvirt,nertpinx/libvirt,olafhering/libvirt,trainstack/libvirt,elmarco/libvirt,rmarwaha/libvirt,novel/fbsd-libvirt,zhlcindy/libvirt-1.1.4-maintain,iam-TJ/libvirt,libvirt/libvirt,siboulet/libvirt-openvz,siboulet/libvirt-openvz,jfehlig/libvirt,datto/libvirt,VenkatDatta/libvirt,datto/libvirt,zippy2/libvirt