Test: Protected VM fails if images are signed by unknown

Arrange:
- prepare VM images signed with a test key
Act:
- start a protected VM
Assert:
- a boot process fails due to pubkey mismatch between pvmfw and
  bootloader

Bug: 218934597
Test: atest MicrodroidHostTestCases
Change-Id: I05755ddf32839ef531ca9a11b2939bbc251ff1fb
diff --git a/tests/test-payload-metadata-config.json b/tests/test-payload-metadata-config.json
new file mode 100644
index 0000000..3c56e5f
--- /dev/null
+++ b/tests/test-payload-metadata-config.json
@@ -0,0 +1,19 @@
+{
+  "_comment": "This file is to create a payload-metadata partition for payload.img which is for MicrodroidTestApp to run with assets/vm_config.json",
+  "apexes": [
+    {
+      "name": "com.android.os.statsd",
+      "path": ""
+    },
+    {
+      "name": "com.android.adbd",
+      "path": ""
+    }
+  ],
+  "apk": {
+    "name": "microdroid-apk",
+    "path": "",
+    "idsig_path": ""
+  },
+  "payload_config_path": "/mnt/apk/assets/vm_config.json"
+}
\ No newline at end of file