CEC-4595 - show online status of cars in fleet (#374)

* CEC-4595 - show online status of cars in fleet

* fix mocking

src/components/Contexts/FleetContext.test.jsx

@@ -1,4 +1,5 @@
 jest.mock("../../services/fleetsAPI");
+jest.mock("../../services/vehiclesAPI");
 
 import {
   render,
@@ -800,9 +801,21 @@ const expectedFleetsData = [
 ];
 
 const expectedFleetVehiclesData = [
-  "USWESTVIN12345678",
-  "USWESTVIN12345679",
-  "USWESTVIN12345670",
+  {
+    vin: "USWESTVIN12345678",
+    connected: true,
+    connectedHMI: false,
+  },
+  {
+    vin: "USWESTVIN12345679",
+    connected: true,
+    connectedHMI: false,
+  },
+  {
+    vin: "USWESTVIN12345670",
+    connected: true,
+    connectedHMI: false,
+  },
 ];
 
 const expectedFleetCANFiltersData = [