Fix SELinux error in vendor_qualifiednetworks_app.

SELinux : avc:  denied  { find } for pid=1763 uid=10201 name=isub scontext=u:r:vendor_qualifiednetworks_app:s0:c201,c256,c512,c768 tcontext=u:object_r:radio_service:s0 tclass=service_manager permissive=1

Bug: 204718865
Test: The error is gone after applying the patch.
Change-Id: I77d5f550614e1d63ab1547fc8d0ad1b70f72bed8