Define sepolicy for ferrocrhome app

it needs to use debug sysprop for a while

Bug: 348113995
Test: run ferrochrome app
Change-Id: Ibc518c71a4533ad846514af02cbf5bffb9916d81
diff --git a/private/seapp_contexts b/private/seapp_contexts
index 291e097..907861c 100644
--- a/private/seapp_contexts
+++ b/private/seapp_contexts
@@ -223,3 +223,4 @@
 user=_app fromRunAs=true domain=runas_app levelFrom=user
 user=_app isPrivApp=true name=com.android.virtualization.vmlauncher domain=vmlauncher_app type=privapp_data_file levelFrom=all
 user=_app isPrivApp=true name=com.google.android.virtualization.vmlauncher domain=vmlauncher_app type=privapp_data_file levelFrom=all
+user=_app isPrivApp=true name=com.android.virtualization.ferrochrome domain=ferrochrome_app type=privapp_data_file levelFrom=all