Fix gradle integration tests on Windows

Android Gradle Plugin 3.0 and 3.1 use aapt that does not handle
long paths on Windows. This commit uses shorter paths for the project
working directory on Windows.

Test: running integration tests on Windows

buildSrc/src/main/kotlin/tasks.kt

@@ -111,7 +111,12 @@ fun Project.projectTest(taskName: String = "test", parallel: Boolean = false, bo
             (teamcity?.get("teamcity.build.tempDir") as? String)
                 ?: System.getProperty("java.io.tmpdir")
         systemTempRoot.let {
-            subProjectTempRoot = Files.createTempDirectory(File(systemTempRoot).toPath(), project.name + "Project_" + taskName + "_")
+            subProjectTempRoot = if (System.getProperty("os.name")!!.contains("Windows")) {
+                // Aapt2 from Android Gradle Plugin 3.2 and below does not handle long paths on Windows.
+                Files.createTempDirectory(File(systemTempRoot).toPath(), "")
+            } else {
+                Files.createTempDirectory(File(systemTempRoot).toPath(), project.name + "Project_" + taskName + "_")
+            }
             systemProperty("java.io.tmpdir", subProjectTempRoot.toString())
         }
     }

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/BaseGradleIT.kt

@@ -33,7 +33,8 @@ abstract class BaseGradleIT {
 
     @Before
     fun setUp() {
-        workingDir = createTempDir("BaseGradleIT")
+        // Aapt2 from Android Gradle Plugin 3.2 and below does not handle long paths on Windows.
+        workingDir = createTempDir(if (isWindows) "" else "BaseGradleIT")
         acceptAndroidSdkLicenses()
     }