selinux: cnd vendor property fix for dataservice app

This is to fix the following denial:
type=1400 audit(1529953110.799:381): avc: denied { read } for pid=2348
    comm=".dataservices" name="u:object_r:vendor_default_prop:s0"
    dev="tmpfs" ino=27030 scontext=u:r:dataservice_app:s0
    tcontext=u:object_r:vendor_default_prop:s0 tclass=file permissive=0

Change-Id: Ic49211c9d0a6898705f6d42f97136dea8ebd9231