qemu: support of emulator_period and emulator_quota's modification
qemu: support of emulator_period and emulator_quota's modification

allow the user change/get emulator's period and quota when the vm is running.

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