def vm_reconfig_hardware(options = {})
raise ArgumentError, "hardware_spec is a required parameter" unless options.has_key? 'hardware_spec'
raise ArgumentError, "instance_uuid is a required parameter" unless options.has_key? 'instance_uuid'
search_filter = { :uuid => options['instance_uuid'], 'vmSearch' => true, 'instanceUuid' => true }
vm_mob_ref = @connection.searchIndex.FindAllByUuid(search_filter).first
task = vm_mob_ref.ReconfigVM_Task(:spec => RbVmomi::VIM.VirtualMachineConfigSpec(options['hardware_spec']))
task.wait_for_completion
{ 'task_state' => task.info.state }
end