Add Gservices setting for the frequency to perform provisioning.

core/java/android/provider/Settings.java

@@ -3120,6 +3120,13 @@ public final class Settings {
         public static final String VENDING_PROMO_REFRESH_FREQUENCY_MS =
                 "vending_promo_refresh_freq_ms";
 
+        /**
+         * Frequency in milliseconds when we should refresh the provisioning information from
+         * the carrier backend.
+         */
+        public static final String VENDING_CARRIER_PROVISIONING_REFRESH_FREQUENCY_MS =
+                "vending_carrier_ref_freq_ms";
+
         /**
          * URL that points to the legal terms of service to display in Settings.
          * <p>