Add stange@ to the list of ContextHub owners

Change-Id: I91b4d30f94b7a75f50ece7c6fddab666e43d01b9
Test: presubmits
diff --git a/services/core/java/com/android/server/location/contexthub/OWNERS b/services/core/java/com/android/server/location/contexthub/OWNERS
index d4393d6..90c2330 100644
--- a/services/core/java/com/android/server/location/contexthub/OWNERS
+++ b/services/core/java/com/android/server/location/contexthub/OWNERS
@@ -1,2 +1,3 @@
 arthuri@google.com
 bduddie@google.com
+stange@google.com