Extract logic of storing values to separate class

Also rename DefaultVehicleHal to EmulatedVehicleHal and
extract emulator related code to VehicleEmulator class

Test: mm -j32 ; verified Car Service worked

Change-Id: I34361fdec6f94629cf7ef6c35ff56ef9ce78b855
diff --git a/automotive/vehicle/2.1/default/Android.mk b/automotive/vehicle/2.1/default/Android.mk
index 51cb146..32ec456 100644
--- a/automotive/vehicle/2.1/default/Android.mk
+++ b/automotive/vehicle/2.1/default/Android.mk
@@ -49,7 +49,7 @@
 
 LOCAL_MODULE:= $(vhal_v2_1)-default-impl-lib
 LOCAL_SRC_FILES:= \
-    impl/vhal_v2_1/DefaultVehicleHal.cpp \
+    impl/vhal_v2_1/EmulatedVehicleHal.cpp \
 
 LOCAL_C_INCLUDES := \
     $(LOCAL_PATH)/impl/vhal_v2_1 \