untrusted_apps: Allow untrusted apps to find healthd_service.

This allows apps to find the healthd service which is used to query
battery properties.

Bug: 24759218
Change-Id: I72ce5a28b2ffd57aa424faeb2d039b6c92f9597d
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>

untrusted_app.te

@@ -81,6 +81,7 @@ allow untrusted_app cache_file:dir create_dir_perms;
 allow untrusted_app cache_file:file create_file_perms;
 
 allow untrusted_app drmserver_service:service_manager find;
+allow untrusted_app healthd_service:service_manager find;
 allow untrusted_app mediaserver_service:service_manager find;
 allow untrusted_app nfc_service:service_manager find;
 allow untrusted_app radio_service:service_manager find;