Add logs to help debug biometric CTS

Add logs to help CTS investigatin (e.g.
BiometricsAtomsTests#testAuthenticateAtom)

Bug: 306860523
Test: atest BiometricsAtomsTests#testAuthenticateAtom
Change-Id: I04f8797bb86b6e21f996e95df32ec152afb39ed9

core/java/android/hardware/biometrics/BiometricTestSession.java

@@ -92,6 +92,7 @@ public class BiometricTestSession implements AutoCloseable {
         mTestedUsers = new ArraySet<>();
         mUsersCleaningUp = new ArraySet<>();
         setTestHalEnabled(true);
+        Log.d(getTag(), "Opening BiometricTestSession");
     }
 
     /**

services/core/java/com/android/server/biometrics/sensors/face/aidl/Sensor.java

@@ -259,6 +259,7 @@ public class Sensor {
     }
 
     @VisibleForTesting @Nullable protected AidlSession getSessionForUser(int userId) {
+        Slog.d(TAG, "getSessionForUser: mCurrentSession: " + mCurrentSession);
         if (mCurrentSession != null && mCurrentSession.getUserId() == userId) {
             return mCurrentSession;
         } else {

services/core/java/com/android/server/biometrics/sensors/fingerprint/aidl/Sensor.java

@@ -295,6 +295,7 @@ public class Sensor {
     }
 
     @Nullable protected AidlSession getSessionForUser(int userId) {
+        Slog.d(TAG, "getSessionForUser: mCurrentSession: " + mCurrentSession);
         if (mCurrentSession != null && mCurrentSession.getUserId() == userId) {
             return mCurrentSession;
         } else {