[NC#2] clatd: allow clatd access raw and packet socket inherited from netd

Needed because the raw and packet socket setup are moved from
clatd to netd. Netd pass the configured raw and packet sockets
to clatd. clatd needs the permission to access inherited
objects.

Test: manual test
1. Connect to ipv6-only wifi.
2. Try IPv4 traffic.
   $ ping 8.8.8.8

Test:
Change-Id: If6479f815a37f56715d7650c714202fcc1ec466b
1 file changed