refactor: 더미 데이터 생성 클래스와 기존 테스트 클래스 호환을 위한 DatabaseCleanerExtension 옵션 추가

src/test/kotlin/roomescape/supports/KotestConfig.kt

@@ -29,8 +29,12 @@ object KotestConfig : AbstractProjectConfig() {
 @Import(TestConfig::class)
 @ActiveProfiles("test")
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
-abstract class FunSpecSpringbootTest : FunSpec({
+abstract class FunSpecSpringbootTest(
-    extension(DatabaseCleanerExtension())
+    enableCleanerExtension: Boolean = true,
+) : FunSpec({
+    if (enableCleanerExtension) {
+        extension(DatabaseCleanerExtension())
+    }
 }) {
     @Autowired
     private lateinit var userRepository: UserRepository