Merge "Add KeyChain.createManageCredentialsIntent" am: acc78ee8eb am: 424cd636e2

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1588312

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Idcd213b9e760b09f69753378c91a4afff47f63a9