Bug 865310

Description of problem:
set_node_memory_parameters can not work and failed with error
libvirt error code: 8, message: invalid argument: parameter 'shm_pages_shared' not supported
when I want to set shm-sleep-millisecs and shm-pages-to-scan

Version-Release number of selected component (if applicable):
perl-Sys-Virt-0.10.2-1.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1. # cat perl-test.pl
#!/usr/bin/perl
use warnings;
use strict;
use Sys::Virt;

my $uri = "qemu:///system";
my $con = Sys::Virt->new(address => $uri);

my %param = (Sys::Virt::NODE_MEMORY_SHARED_PAGES_TO_SCAN => 200, Sys::Virt::NODE_MEMORY_SHARED_SLEEP_MILLISECS => 100);
$con->set_node_memory_parameters(\%param);

2. perl perl-test.pl
  
Actual results:
libvirt error code: 8, message: invalid argument: parameter 'shm_pages_shared' not supported

Expected results:
set can succeed

Additional info:
virsh command succeed
# virsh node-memory-tune --shm-pages-to-scan 200 --shm-sleep-millisecs 100
# virsh node-memory-tune
Shared memory:
	shm_pages_to_scan 200
	shm_sleep_millisecs 100
	shm_pages_shared 0
	shm_pages_sharing 0
	shm_pages_unshared 0
	shm_pages_volatile 0
	shm_full_scans  0