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

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

Change-Id: Ie524806023ddceb4481831a05a4750112f4be1b7