kotlin migration: Enable ANDROID_TEST migration

Tested and this works

AnkiDroid/kotlinMigration.gradle

@@ -48,7 +48,7 @@ def className = ""
 enum Source {
     MAIN("/src/main/java"),
     TEST("/src/test/java"),
-    ANDROID_TEST("/src/androidTest/java") // untested
+    ANDROID_TEST("/src/androidTest/java")
     public String path
     private Source(String pathSubset) {
         this.path = pathSubset

tools/migrate.sh

@@ -107,9 +107,7 @@ then
     SOURCE=TEST
 elif [[ $FILEPATH == *AnkiDroid/src/androidTest* ]];
 then
-    echo "The added file is in AnkiDroid/src/AndroidTest, which our two-commits system don't support."
-    exit 1
-     #SOURCE=ANDROID_TEST
+    SOURCE=ANDROID_TEST
 else
     echo "The added/deleted file is not in AnkiDroid/src/' main or test or AndroidTest"
     exit 1