virsh: update man page for cpu_shares parameter
virsh: update man page for cpu_shares parameter

The man page suggest that the cpu_shares parameter of schedinfo
allows values 0-262144, but the kernel remaps values 0 and 1 to
the minimum 2, just document that behaviour:

[root@test ~]# cat /cgroup/cpu/libvirt/qemu/cpu.shares
1024
[root@test ~]# echo 0 > /cgroup/cpu/libvirt/qemu/cpu.shares
[root@test ~]# cat /cgroup/cpu/libvirt/qemu/cpu.shares
2
[root@test ~]# echo 1 > /cgroup/cpu/libvirt/qemu/cpu.shares
[root@test ~]# cat /cgroup/cpu/libvirt/qemu/cpu.shares
2
[root@test ~]#

* tools/virsh.pod: update description of the cpu_shares parameter
  to indicate the values 0 and 1 are automatically changed by the
  kernel to minimal value 2

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