Require NETWORK_STACK Permission for IpSec Tunnel Mode

At least until further permissions are agreed upon,
the NETWORK_STACK permission is sufficient to ensure
that access to the tunnel mode APIs is secure, and
this permission will always be a sufficient condition.
Thus, adding NETWORK_STACK.

Bug: 66955045
Test: compilation
Change-Id: I2dc36896a52d2e71fad55041507d68ca91191ffc
3 files changed
tree: 1bf2bcfc4d7947f8334dc2afdf41cf5f0e612a2c
  1. core/
  2. services/
  3. wifi/