Add CTS test for android.app.compat.CompatChanges

Ensure that the android.app.compat.CompatChanges SystemApi works as
expected.

Bug: 142650523
Test: atest com.android.cts.appcompat.CompatChangesSystemApiTest
Change-Id: Ie9f484d3676f2b222946a39b270a068375fa89f8
diff --git a/hostsidetests/appcompat/compatchanges/Android.bp b/hostsidetests/appcompat/compatchanges/Android.bp
new file mode 100644
index 0000000..ca0867b
--- /dev/null
+++ b/hostsidetests/appcompat/compatchanges/Android.bp
@@ -0,0 +1,31 @@
+// Copyright (C) 2020 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.
+
+java_test_host {
+    name: "CtsAppCompatHostTestCases",
+    defaults: ["cts_defaults"],
+    srcs: ["src/**/*.java"],
+    libs: [
+        "cts-tradefed",
+        "tradefed",
+        "guava",
+    ],
+    static_libs:["CompatChangeGatingTestBase"],
+    // tag this module as a cts test artifact
+    test_suites: [
+        "cts",
+        "vts",
+        "general-tests",
+    ],
+}