Add odsign status properties.

These properties are used to communicate odsign status, and allow init
to evict keys and start zygote at the correct moments in time.

Bug: 165630556
Test: no denials from init/odsign
Change-Id: I813e5c1c93d6f00a251a9cce02d0b74e5372c1ce
diff --git a/private/property_contexts b/private/property_contexts
index 98ac9bf..44fa2e2 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -544,6 +544,10 @@
 
 apexd.status u:object_r:apexd_prop:s0 exact enum starting activated ready
 
+odsign.key.done u:object_r:odsign_prop:s0 exact bool
+odsign.verification.done u:object_r:odsign_prop:s0 exact bool
+odsign.verification.success u:object_r:odsign_prop:s0 exact bool
+
 dev.bootcomplete   u:object_r:boot_status_prop:s0 exact bool
 sys.boot_completed u:object_r:boot_status_prop:s0 exact bool