Add setting flag to enable contact metadata syncing in CP2

Bug:20269816
Change-Id: Ie0906c03d888f57bb0a09a2bebd7b161c797792e
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index f640f0d..3707694 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -7720,6 +7720,13 @@
          * @hide
          */
         public static final String NEW_CONTACT_AGGREGATOR = "new_contact_aggregator";
+
+        /**
+         * Whether to enable contacts metadata syncing or not
+         * The value 1 - enable, 0 - disable
+         * @hide
+         */
+        public static final String CONTACT_METADATA_SYNC = "contact_metadata_sync";
     }
 
     /**