Merge "Keystore 2.0: Make Legacy VPN settings ready for Keystore 2.0" am: 3c7b085331

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/1569702

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I0f252dc43dfc8494e7cceb3b559b7252cd99697c