sepolicy: qva: Allow FM app to find mediametrics service

11-03 19:54:34.702   693   693 I auditd  : avc:  denied  { find } for
 pid=13778 uid=10126 name=media.metrics
 scontext=u:r:vendor_fm_app:s0:c126,c256,c512,c768
 tcontext=u:object_r:mediametrics_service:s0
 tclass=service_manager permissive=0

Signed-off-by: Jarl-Penguin <jarlpenguin@outlook.com>
Change-Id: I1d9b402dd18e54e5d07550e8ae0ef7e9c804bb12