Skip dexpreopting android_test_import modules

android_test_import modules should be labelled as tests so they are
not dexpreopted.

Bug: 155778135
Test: m CtsCorruptApkTests_Compressed_Q
Change-Id: I7baa5405d03df03920b01616b030ba77f882a77e
Merged-In: I7baa5405d03df03920b01616b030ba77f882a77e
diff --git a/java/app.go b/java/app.go
index 4c4b83c..eac76fd 100755
--- a/java/app.go
+++ b/java/app.go
@@ -1394,6 +1394,8 @@
 		module.processVariants(ctx)
 	})
 
+	module.dexpreopter.isTest = true
+
 	android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
 	android.InitDefaultableModule(module)
 	android.InitSingleSourcePrebuiltModule(module, &module.properties, "Apk")