Updates an openvz vm.
$session_id, $client_id, $vm_id, $params
Parameters (in $params):server_id (int(11))
veid (int(10))
ostemplate_id (int(11))
template_id (int(11))
ip_address (varchar(255))
hostname (varchar(255))
vm_password (varchar(255))
start_boot (varchar(255))
active (varchar(255))
active_until_date (date)
description (text)
diskspace (int(11))
traffic (int(11))
bandwidth (int(11))
ram (int(11))
ram_burst (int(11))
cpu_units (int(11))
cpu_num (int(11))
cpu_limit (int(11))
io_priority (int(11))
nameserver (varchar(255))
create_dns (varchar(1))
capability (text)
config (mediumtext)
Output:Returns the number of affected rows.