'Return the name of the Volume Group used in LXC.'

def _get_lxc_vg(self):

    build_command = [self.module.get_bin_path('lxc-config', True), 'lxc.bdev.lvm.vg']
    (rc, vg, err) = self._run_command(build_command)
    if (rc != 0):
        self.failure(err=err, rc=rc, msg='Failed    to    read    LVM    VG    from    LXC    config', command='    '.join(build_command))
    else:
        return str(vg.strip())
