Added DeleteObject and Cleanup support to basic CharacterString object (#886)

test/bacnet/basic/object/csv/CMakeLists.txt

@@ -62,6 +62,7 @@ add_executable(${PROJECT_NAME}
     ${SRC_DIR}/bacnet/channel_value.c
     ${SRC_DIR}/bacnet/secure_connect.c
     ${SRC_DIR}/bacnet/memcopy.c
+    ${SRC_DIR}/bacnet/basic/sys/keylist.c
     # Test and test library files
     ./src/main.c
     ${ZTST_DIR}/ztest_mock.c

test/bacnet/basic/object/csv/src/main.c

@@ -30,10 +30,12 @@ static void testCharacterString_Value(void)
     const int *pProprietary = NULL;
     unsigned count = 0;
     bool status = false;
+    uint32_t object_instance = BACNET_MAX_INSTANCE;
 
     CharacterString_Value_Init();
+    object_instance = CharacterString_Value_Create(object_instance);
     count = CharacterString_Value_Count();
-    zassert_true(count > 0, NULL);
+    zassert_true(count == 1, NULL);
     rpdata.application_data = &apdu[0];
     rpdata.application_data_len = sizeof(apdu);
     rpdata.object_type = OBJECT_CHARACTERSTRING_VALUE;