[automerger skipped] Merge "Keystore 2.0: Make VPN Keystore 2.0 ready." am: 421c5739ea am: da3d7dae0e am: 8f021be75b -s ours

am skip reason: Change-Id I27975113896ea137260a9f94a34fb1c3ca173fe3 with SHA-1 4ba2f0c690 is in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1569502

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I0bd42249b22890ef71ece31e70e7c9a61cdb50e1