Updating wearable_core_hardware to support device administration.

Bug: 27409742
Change-Id: Iaf6d6bbf67834079d4f37d7a84310c75588b3a25
(cherry picked from commit 7feabdebd0cfd92dd2f5bc0c258ebd45269a3d9b)
diff --git a/data/etc/wearable_core_hardware.xml b/data/etc/wearable_core_hardware.xml
index 346abad..ae0b4d4 100644
--- a/data/etc/wearable_core_hardware.xml
+++ b/data/etc/wearable_core_hardware.xml
@@ -31,8 +31,10 @@
     <!-- basic system services -->
     <feature name="android.software.home_screen" />
 
-    <!-- devices that support a device administrator policy must include
-         android.software.device_admin.xml -->
+    <!-- device administration -->
+    <feature name="android.software.device_admin" />
+    <feature name="android.software.managed_users" />
+
     <!-- devices with GPS must include device/google/clockwork/gps.xml -->
     <!-- devices with an autofocus camera and/or flash must include either
          android.hardware.camera.autofocus.xml or