Merge "Add a new config to support primary credential providers. Also renamed...

Merge "Add a new config to support primary credential providers. Also renamed the existing defaultCredentialProvider to enabledCredentialProvider to reduce the confusiton." into udc-dev am: 02e6c5d7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22977989



Change-Id: I708a71f5f1c23a96dca74ac64415b59378308035
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>