Make ipsec resource as SystemApi

Make config_optionalIpSecAlgorithms @SystemApi so that it can
be used in mainline module.

Bug: 204153604
Test: FrameworksNetTests
Change-Id: Ia082f0e1749f1399bd0b41dab6612744cc67e62a
Merged-In: Ia082f0e1749f1399bd0b41dab6612744cc67e62a
2 files changed