Include 'debug.hypervisor.metrics_tag' in metric names

Vendor code can set a property to tag performance metric names. This can
be useful if devices in the lab have varying performance
characteristics.

Test: atest -p packages/modules/Virtualization:avf-postsubmit
Change-Id: I46478471571639a145079cdc296b9824f1328fc3
diff --git a/tests/helper/Android.bp b/tests/helper/Android.bp
index f77dae5..60d4be1 100644
--- a/tests/helper/Android.bp
+++ b/tests/helper/Android.bp
@@ -20,6 +20,7 @@
     static_libs: [
         "androidx.test.runner",
         "androidx.test.ext.junit",
+        "MicrodroidTestHelper",
         "VirtualizationTestHelper",
         "truth-prebuilt",
     ],