Merge "Make IpSecManager.DIRECTION_FWD @SystemApi" am: 644ab1a544 am: 453ce239aa am: 63c911b9d5 am: e439212deb

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1928463

Change-Id: Id0f002e61d5fa6df4e3712b22e1911e4acce2b43