Update after namespace refactor

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)

daemon/execdriver/native/create.go

@@ -54,7 +54,7 @@ func (d *driver) createContainer(c *execdriver.Command) (*libcontainer.Container
 
 func (d *driver) createNetwork(container *libcontainer.Container, c *execdriver.Command) error {
 	if c.Network.HostNetworking {
-		container.Namespaces.Get("NEWNET").Enabled = false
+		container.Namespaces["NEWNET"] = false
 		return nil
 	}
 	container.Networks = []*libcontainer.Network{