Give services app_api_service attribute

avc:  denied  { find } for service=network_management pid=4503 uid=10070 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:network_management_service:s0 tclass=service_manager
avc:  denied  { find } for service=netstats pid=4503 uid=10070 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:netstats_service:s0 tclass=service_manager permissive=0

Bug: 25022496
Change-Id: Ib6eac76b680fed3eca7e4942c6b0e375f12b6496