Key revocation check is permissive when device is unlocked

imageValidationThrowOrWarning() logs the error as a warning if device
bootloader is unlocked, else re-throw the error.
Device lock state is queried via PersistentDataBlockManager service.

Bug: 128892201
Test: adb shell am start-activity \
    -n com.android.dynsystem/com.android.dynsystem.VerificationActivity \
    -a android.os.image.action.START_INSTALL \
    --el KEY_USERDATA_SIZE 8192 \
    -d file:///storage/emulated/0/Download/aosp_arm64-dsu_test.zip \
    --es ${IMAGE_KEY}
Test: Observe the logcat
Change-Id: I895e70d90624afda2bf7cd3b34ea8d21a1702163