Add ro.keystore.boot_level_key.strategy

Bug: 241241178
Test: set property on Cuttlefish, check logs for strategy used.
Change-Id: Ifaaec811316c43fdae232f9a08c5d862011ccc71
diff --git a/private/property_contexts b/private/property_contexts
index 5cf27aa..ed9de36 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -1323,6 +1323,9 @@
 # Property that tracks keystore crash counts during a boot cycle.
 keystore.crash_count u:object_r:keystore_crash_prop:s0 exact int
 
+# Configure the means by which we protect the L0 key from the future
+ro.keystore.boot_level_key.strategy u:object_r:keystore_config_prop:s0 exact string
+
 partition.system.verified     u:object_r:verity_status_prop:s0 exact string
 partition.system_ext.verified u:object_r:verity_status_prop:s0 exact string
 partition.product.verified    u:object_r:verity_status_prop:s0 exact string