sample_updater: add non-streaming demo

SampleUpdater app was tested manually on a device.
There are unit tests for utility classes.

SampleUpdater app demonstrates how to use Android Update Engine to
apply A/B (seamless) update.
This CL contains demo of non-stream update using async update_engine,
which is accessed directly from an activity.
This app also shows logs from update_engine on the UI.
Instructions can be found in `README.md`.

- Create a UI with list of configs, current version, control buttons and a progress bar
- Add PayloadSpec and PayloadSpecs for working with update zip file
- Add UpdateConfig for working with json config files
- Add applying non-streaming update

Test: tested manually and unit tests for utilities
Change-Id: I05d4a46ad9cf8b334c9c60c7dd4da486dac0400a
Signed-off-by: Zhomart Mukhamejanov <zhomart@google.com>
diff --git a/sample_updater/tests/Android.mk b/sample_updater/tests/Android.mk
new file mode 100644
index 0000000..1ec68b9
--- /dev/null
+++ b/sample_updater/tests/Android.mk
@@ -0,0 +1,32 @@
+#
+# Copyright (C) 2018 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.
+#
+
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_PACKAGE_NAME := SystemUpdaterSampleTests
+LOCAL_SDK_VERSION := system_current
+LOCAL_MODULE_TAGS := tests
+LOCAL_JAVA_LIBRARIES := \
+    android.test.runner \
+    android.test.base
+LOCAL_STATIC_JAVA_LIBRARIES := android-support-test
+LOCAL_INSTRUMENTATION_FOR := SystemUpdaterSample
+LOCAL_PROGUARD_ENABLED := disabled
+
+LOCAL_SRC_FILES := $(call all-subdir-java-files)
+
+include $(BUILD_PACKAGE)