Use JDK 8 as JAVA_HOME for android tests

* android sdk tools binaries run in a child process relies on JAVA_HOME
* old android sdk tools can run only under JDK 8, requiring javax libs

compiler/android-tests/build.gradle.kts

@@ -41,8 +41,10 @@ sourceSets {
 
 projectTest {
     dependsOn(":dist")
+    val jdkHome = project.getToolchainJdkHomeFor(JdkMajorVersion.JDK_1_8)
     doFirst {
         environment("kotlin.tests.android.timeout", "45")
+        environment("JAVA_HOME", jdkHome.get())
     }
 
     if (project.hasProperty("teamcity") || project.hasProperty("kotlin.test.android.teamcity")) {