Allow binder call between statsd and healthd. Also allow statsd to find

health hal service for battery metrics.

Test: cts test, manual test

Change-Id: I73a801f6970e25bee5921479f2f7078bcb1973a9

private/statsd.te

@@ -28,6 +28,7 @@ allow statsd stats_data_file:file create_file_perms;
 
 # Allow statsd to make binder calls to any binder service.
 binder_call(statsd, appdomain)
+binder_call(statsd, healthd)
 binder_call(statsd, incidentd)
 binder_call(statsd, statscompanion_service)
 binder_call(statsd, system_server)
@@ -47,6 +48,9 @@ allow statsd {
   system_api_service
 }:service_manager find;
 
+# Grant statsd to access health hal to access battery metrics.
+allow statsd hal_health_hwservice:hwservice_manager find;
+
 # Only statsd can publish the binder service.
 add_service(statsd, stats_service)