Refactor HashMap for HttpResponse to Response object

[emeroad]

Removes redundant hashmap declarations and replaces them with Response.
Fix to handle http status code correctly when an error occurs.

Before

public Map<String, String> insertRole(@RequestBody RoleInformation roleInformation) {
        if (AdditionValueValidator.validateRoleId(roleInformation.getRoleId()) == false) {
            Map<String, String> result = new HashMap<>();
            result.put("errorCode", "500");
            result.put("errorMessage", "roleId pattern is invalid");
            return result;
        }

        roleService.insertRoleInformation(roleInformation);

        Map<String, String> result = new HashMap<>();
        result.put("result", "SUCCESS");
        return result;
    }

After

    public ResponseEntity<Response> insertRole(@RequestBody RoleInformation roleInformation) {
        if (AdditionValueValidator.validateRoleId(roleInformation.getRoleId()) == false) {
            return ErrorResponse.badRequest("roleId pattern is invalid");
        }

        roleService.insertRoleInformation(roleInformation);

        return SuccessResponse.ok();
    }