Add a new MANAGE_IPSEC_TUNNELS permission and
protect all IPsec Tunnel mode APIs with it.
This permission is only granted to the system or
through an AppOp.
Bug: 66955045
Test: compilation
Merged-In: I0f618373b500c493ef2211bece681f74652a1833
Change-Id: I0f618373b500c493ef2211bece681f74652a1833
(cherry picked from commit 00e77247eb)