Send RECOMMEND_NETWORKS action when binding to provider.

Some services use action to disambiguate which binder to return in
onBind.

Test: built && installed && bound.
BUG: 33905890
Change-Id: I83ae41b472c597661b93f5467b64b258e9056f5f
diff --git a/services/core/java/com/android/server/NetworkScoreService.java b/services/core/java/com/android/server/NetworkScoreService.java
index fe81536..983d039 100644
--- a/services/core/java/com/android/server/NetworkScoreService.java
+++ b/services/core/java/com/android/server/NetworkScoreService.java
@@ -36,6 +36,7 @@
 import android.net.NetworkKey;
 import android.net.NetworkScorerAppManager;
 import android.net.NetworkScorerAppManager.NetworkScorerAppData;
+import android.net.NetworkScoreManager;
 import android.net.RecommendationRequest;
 import android.net.RecommendationResult;
 import android.net.ScoredNetwork;
@@ -633,7 +634,7 @@
 
         void connect(Context context) {
             if (!mBound) {
-                Intent service = new Intent();
+                Intent service = new Intent(NetworkScoreManager.ACTION_RECOMMEND_NETWORKS);
                 service.setComponent(mComponentName);
                 mBound = context.bindServiceAsUser(service, this,
                         Context.BIND_AUTO_CREATE | Context.BIND_FOREGROUND_SERVICE,