Adding some widget addition flow tests

> Added two dummy widget providers: with config and without config
> Added tests for verify widget config flow

Change-Id: I4577f085abe8f8b82047b644c71cc9065358153a
diff --git a/tests/Android.mk b/tests/Android.mk
index 5103ced..e8797a7 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -20,6 +20,7 @@
 LOCAL_STATIC_JAVA_LIBRARIES := android-support-test ub-uiautomator mockito-target-minus-junit4
 
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
+LOCAL_FULL_LIBS_MANIFEST_FILES := $(LOCAL_PATH)/AndroidManifest-common.xml
 
 LOCAL_SDK_VERSION := current
 LOCAL_MIN_SDK_VERSION := 21