Add tombstone_config_prop and move related prop

tombstoned.max_tombstone_coun becomes tombstone_config_prop to remove
exported*_default_prop

Bug: 155844385
Test: tombstoned is running and logcat shows no denials
Change-Id: I57bebb5766d790dc52d40a6d106f480e0e34fa4e
diff --git a/private/compat/27.0/27.0.ignore.cil b/private/compat/27.0/27.0.ignore.cil
index 59b93da..0ecc85c 100644
--- a/private/compat/27.0/27.0.ignore.cil
+++ b/private/compat/27.0/27.0.ignore.cil
@@ -184,6 +184,7 @@
     test_boot_reason_prop
     time_prop
     timedetector_service
+    tombstone_config_prop
     tombstone_wifi_data_file
     trace_data_file
     traced
diff --git a/private/compat/30.0/30.0.cil b/private/compat/30.0/30.0.cil
index 4c2a7a2..5cc8eca 100644
--- a/private/compat/30.0/30.0.cil
+++ b/private/compat/30.0/30.0.cil
@@ -1367,6 +1367,7 @@
     packagemanager_config_prop
     recovery_config_prop
     telephony_config_prop
+    tombstone_config_prop
     zram_config_prop))
 (typeattributeset exported3_radio_prop_30_0 (exported3_radio_prop))
 (typeattributeset exported3_system_prop_30_0