Merge "Keystore 2.0 SPI: Silence warning about blocking calls to Keystore." am: fa8d51d5a6 am: ad73e362f0 am: 41d04381e9 am: 5ac4488fec

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1706447

Change-Id: I616459f0a631b84dac9cca508326dbd47ca1522e