keystore2: Add test for RKPD key upgrade

Also require root permisions so that the test can talk to KeyMint.

Test: keystore2_test
Change-Id: I265c2a05fdf0393adb81576e895009ed07dd2d46
diff --git a/keystore2/Android.bp b/keystore2/Android.bp
index 57038df..d8c0081 100644
--- a/keystore2/Android.bp
+++ b/keystore2/Android.bp
@@ -158,6 +158,7 @@
         "watchdog",
         "keystore2_blob_test_utils",
     ],
+    require_root: true,
 }
 
 rust_defaults {