[K/N][gradle][test] Add test to allow list

Test requires Kotlin Space Dev repo to be set in the test project
to check that KGP is able to download K/N bundles from the specified
repository defined either as a property or maven url

repo/codebase-tests/tests/org/jetbrains/kotlin/code/CodeConformanceTest.kt

@@ -55,6 +55,7 @@ class CodeConformanceTest : TestCase() {
                 "libraries/tools/kotlin-gradle-plugin-core/gradle_api_jar/build/tmp",
                 "libraries/tools/kotlin-gradle-plugin-integration-tests/build",
                 "libraries/tools/kotlin-gradle-plugin-integration-tests/out",
+                "libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/native/NativeDownloadAndPlatformLibsIT.kt",
                 "libraries/tools/kotlin-js-tests/src/test/web/qunit.js",
                 "libraries/tools/kotlin-maven-plugin/target",
                 "libraries/tools/kotlin-source-map-loader/.gradle",