Include PORT_4500 option when encoding IkeSessionParams

This commit makes sure IKE_OPTION_FORCE_PORT_4500 is included
when converting IkeSessionParams to a PersistableBundle.

Bug: 185637142
Test: atest IkeSessionParamsUtilsTest
Change-Id: I1fcd6d26e64217091ad960a1c51659046e70a6ac
2 files changed