[test] Add e2e instrumentation test for VM attestation

This cl adds an e2e test to check the VM attestation with the
following steps:

- Provisioning a pair of mock keys in virtualizationservice.
- Requesting VM attestation from a running VM and tracing this
step.
- Validating the attestation result.

To facilitate the testing process, two new APIs have been added.
The first API allows for the provisioning of mock keys, while the
second API facilitates the request for attestation in testing mode.

The new test has been added to busytown config at cl/605577401.

Bug: 318333789
Test: atest VmAttestationTestApp
Change-Id: Icf9d39c704af316f7625cf9d057d255243eca445
diff --git a/service_vm/test_apk/AndroidManifest.xml b/service_vm/test_apk/AndroidManifest.xml
new file mode 100644
index 0000000..b998b7f
--- /dev/null
+++ b/service_vm/test_apk/AndroidManifest.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2024 The Android Open Source Project
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="com.android.virt.vm_attestation.testapp">
+     <uses-permission android:name="android.permission.MANAGE_VIRTUAL_MACHINE" />
+     <uses-permission android:name="android.permission.USE_CUSTOM_VIRTUAL_MACHINE" />
+
+     <application />
+     <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
+        android:targetPackage="com.android.virt.vm_attestation.testapp"
+        android:label="Microdroid VM attestation" />
+</manifest>