Refactor TestController to use ResponseEntity<String> in RevEngApplication method

src/main/java/com/olympus/apollo/controllers/TestController.java

@@ -122,7 +122,7 @@ public class TestController {
 	}
 
 	@PostMapping("/revenginnerapplication")
-	public ResponseEntity<Object> RevEngApplication(@RequestBody ApolloParseRequestDTO apolloParseRequestDTO){
+	public ResponseEntity<String> RevEngApplication(@RequestBody ApolloParseRequestDTO apolloParseRequestDTO){
 		reModuleService.callReverseEngModules(apolloParseRequestDTO);
 		return ResponseEntity.accepted().body("Request to reverse engineering application is being processed");
 	}