Enhancements for avoiding poor connection on wifi

- Avoid flapping
- Increase thresholds and monitor rssi more closely to detect consistently weak signal

Change-Id: I6139a20b7306839b345146a72ce690020a2e00b8
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index b42417a..c3a0b51 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -3129,6 +3129,14 @@
                 "wifi_watchdog_arp_interval_ms";
 
         /**
+         * ms delay interval between rssi polling when the signal is known to be weak
+         * @hide
+         */
+        public static final String WIFI_WATCHDOG_RSSI_FETCH_INTERVAL_MS =
+                "wifi_watchdog_rssi_fetch_interval_ms";
+
+
+        /**
          * ms delay before rechecking a connect SSID for walled garden with a http download.
          * @hide
          */