CEC-4498 update fleetsAPI.addFleetVehicle to send vehicle in an array (#351)

* CEC-4498 update fleet-vehicle-add api to take an array of vehicles

src/components/Controls/CarSelectionTable/index.jsx

@@ -132,7 +132,7 @@ const CarSelectionTable = (props) => {
   }, [search]);
 
   return (
-    <div className={clsx(classes.paper, classes.tableSize)}>
+    <div className={clsx(classes.paper)}>
       <Table>
         <TableHeaderSortable
           classes={classes}