Update Order

This endpoint will be called when Gett order is being updated - for example rider changes the destination. This request should return 201 in case order created successfully. 400 if request with given parameters cannot be satisfied. There is a chance this request will be sent several times with same order ID. In this case the fleet server is required to return 201. This can happen if there is a network disconnect and Gett server performs retry. If 500 returned, Gett server will perform retry.