Add new IKE option in IkeSessionParamsUtils

This commit updates IkeSessionParamsUtils to be able to encode/decode
IkeSessionParams with IKE_OPTION_AUTOMATIC_KEEPALIVE_ON_OFF.

Bug: 259000745
Test: atest IkeSessionParamsUtilsTest
Change-Id: I6dd24893cf3343df05ae41e657ff082145c1e8ff
2 files changed