Add "AlwaysOn" sample to master build.gradle

Change-Id: I0ea18445a19f7c09e951fc82deb60e9ecfd2be42
diff --git a/build.gradle b/build.gradle
index 0753197..cdaf043 100644
--- a/build.gradle
+++ b/build.gradle
@@ -98,6 +98,7 @@
 "admin/DeviceOwner",
 "wearable/wear/XYZTouristAttractions",
 "connectivity/bluetooth/BluetoothAdvertisements",
+"wearable/wear/AlwaysOn",
 ]
 
 List<String> taskNames = [