add test to check usb serial == Build.SERIAL

- follows cdd update for KLP
- checks matches of serial, property ro.serialno, Build.SERIAL, and USB serial
- also updated os.Build test regarding minimum length change
- lsusb should be installed in host to make this test pass: apt-get install usbutils

bug: 10298217
Change-Id: Ibe83dcec34924da7d7d08e3e34cbfa11550b3219
diff --git a/hostsidetests/usb/Android.mk b/hostsidetests/usb/Android.mk
new file mode 100644
index 0000000..488acbb
--- /dev/null
+++ b/hostsidetests/usb/Android.mk
@@ -0,0 +1,31 @@
+# Copyright (C) 2013 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)
+
+# Only compile source java files in this apk.
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+
+LOCAL_MODULE := CtsUsbTests
+
+LOCAL_JAVA_LIBRARIES := cts-tradefed tradefed-prebuilt ddmlib-prebuilt junit
+
+LOCAL_CTS_TEST_PACKAGE := android.usb
+
+include $(BUILD_CTS_HOST_JAVA_LIBRARY)
+
+# Build the test APKs using their own makefiles
+include $(call all-makefiles-under,$(LOCAL_PATH))