Pass server address directly to IKE.

This change updates the buildIkeSessionParams() method to use the new
IKE API that allows the VPN to pass the server address, and let IKE do
the DNS resolution.

Bug: 149356682
Test: FrameworksNetTests passing
Change-Id: Ic1077c6eb1f49bca9331e49555b3787cee02788c
Merged-In: Ic1077c6eb1f49bca9331e49555b3787cee02788c
(cherry picked from commit fe975fea5d228514fd19f95e56859d5c98433f7d)
2 files changed