Decrease number of network logging notifications shown

Now, network logging will show one notification when it is enabled
and one after the next reboot.

Bug: 36254499
Test: CTS Verifier > Managed Provisioning > Device Owner Tests
      > Network Logging UI

Change-Id: I60fc64e96ceb0ec0ae7ca832b74ac8b47e581be4
(cherry picked from commit 55dba53ed433d713a075ba0de15504a1ed42852b)
diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index bfa1b99..e82ba9c 100644
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -742,8 +742,8 @@
         boolean forceEphemeralUsers = false; // Can only be set by a device owner.
         boolean isNetworkLoggingEnabled = false; // Can only be set by a device owner.
 
-        // one notification after enabling + 3 more after reboots
-        static final int DEF_MAXIMUM_NETWORK_LOGGING_NOTIFICATIONS_SHOWN = 4;
+        // one notification after enabling + one more after reboots
+        static final int DEF_MAXIMUM_NETWORK_LOGGING_NOTIFICATIONS_SHOWN = 2;
         int numNetworkLoggingNotifications = 0;
         long lastNetworkLoggingNotificationTimeMs = 0; // Time in milliseconds since epoch