init.rc: add inet permission to VPN daemons explicitly.

Racoon still needs it after dropping root privilege, or pure IPSec VPN
will fail. Mtpd works without it because net_raw implies inet. However
it would be better to set all of them clearly without the assumption.

Change-Id: I50762af2c25ec9cc559e528c7b14f469494fd553
1 file changed