Allow odsign to stop itself.

Carve out a label for the property, and allow odsign to set it.

Bug: 194334176
Test: no denials
Change-Id: I9dafefabc27c679ed9f36e617e824f44f3b16bbd
Merged-In: I9dafefabc27c679ed9f36e617e824f44f3b16bbd
diff --git a/private/property_contexts b/private/property_contexts
index 4947677..7ce64c3 100644
--- a/private/property_contexts
+++ b/private/property_contexts
@@ -169,6 +169,9 @@
 # Restrict access to stopping apexd.
 ctl.stop$apexd          u:object_r:ctl_apexd_prop:s0
 
+# Restrict access to stopping odsign
+ctl.stop$odsign         u:object_r:ctl_odsign_prop:s0
+
 # Restrict access to starting media.transcoding.
 ctl.start$media.transcoding  u:object_r:ctl_mediatranscoding_prop:s0