Merge "Add BiometricManager.getLastAuthenticationTime()" into main

core/api/current.txt

.../java/android/hardware/biometrics/BiometricConstants.java

core/java/android/hardware/biometrics/BiometricManager.java

core/java/android/hardware/biometrics/IAuthService.aidl

core/java/android/hardware/biometrics/IBiometricService.aidl

core/java/android/hardware/biometrics/flags.aconfig

keystore/java/android/security/Authorization.java

keystore/java/android/security/GateKeeper.java

.../core/java/com/android/server/biometrics/AuthService.java

.../java/com/android/server/biometrics/BiometricService.java

services/tests/servicestests/Android.bp

...ts/src/com/android/server/biometrics/AuthServiceTest.java

...c/com/android/server/biometrics/BiometricServiceTest.java