Add an IpClientIntegrationTest

The test sets up a tap interface and starts IpClient on it. It currently
only tests that DhcpClient starts sending discover packets.

Test: atest NetworkStackIntegrationTests
Test: atest NetworkStackTests
Change-Id: I99b135974af758ad5255f06bef6121e85ab62ffe
diff --git a/tests/integration/Android.bp b/tests/integration/Android.bp
new file mode 100644
index 0000000..ec8257f
--- /dev/null
+++ b/tests/integration/Android.bp
@@ -0,0 +1,42 @@
+//
+// Copyright (C) 2019 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.
+//
+
+android_test {
+    name: "NetworkStackIntegrationTests",
+    certificate: "networkstack",
+    srcs: ["src/**/*.java"],
+    test_suites: ["device-tests"],
+    static_libs: [
+        "androidx.annotation_annotation",
+        "androidx.test.rules",
+        "mockito-target-extended-minus-junit4",
+        "NetworkStackBase",
+        "testables",
+    ],
+    libs: [
+        "android.test.runner",
+        "android.test.base",
+        "android.test.mock",
+    ],
+    defaults: ["libnetworkstackutilsjni_deps"],
+    jni_libs: [
+        // For mockito extended
+        "libdexmakerjvmtiagent",
+        "libstaticjvmtiagent",
+        // For NetworkStackUtils included in NetworkStackBase
+        "libnetworkstackutilsjni",
+    ],
+}