Make voiceinteractionservice app_api_service.

Address the following denial from 3rd party voice interaction test:
SELinux : avc:  denied  { find } for service=voiceinteraction pid=30281 uid=10139 scontext=u:r:untrusted_app:s0:c512,c768 tcontext=u:object_r:voiceinteraction_service:s0 tclass=service_manager permissive=0

Bug: 27105570
Change-Id: Ib87d364673cbc883df017bcda7fe1e854a76654f