Update DataUsageSummary to include carrier provided information.

This CL augments the existing data usage display with carrier provided
information about data usage and plans when available from the new
frameworks API.

Test: manual
Test: make RunSettingsRoboTests
Bug: 70950124

Change-Id: Idde1ff786e8c5dbc04e58ffbcc0fd18789682699

tests/robotests/src/com/android/settings/search/BaseSearchIndexProviderTest.java

@@ -137,7 +137,6 @@ public class BaseSearchIndexProviderTest {
         final List<String> nonIndexableKeys = provider
                 .getNonIndexableKeys(RuntimeEnvironment.application);
 
-        assertThat(nonIndexableKeys).containsAllOf("status_header", "limit_summary",
-                "restrict_background");
+        assertThat(nonIndexableKeys).contains("status_header");
     }
 }