Allow extending of the list of directories to be scanned for VSDK

Bug: 180925851
Test: m nothing, manually
Change-Id: I499f084f04e45eb719882be97e3a581ff868cc98
diff --git a/core/soong_config.mk b/core/soong_config.mk
index 9fdf7b8..dfe4dbf 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -158,6 +158,11 @@
   $(call add_json_bool,$(module),true))
 $(call end_json_map)
 
+$(call add_json_list, VendorSnapshotDirsIncluded,        $(VENDOR_SNAPSHOT_DIRS_INCLUDED))
+$(call add_json_list, VendorSnapshotDirsExcluded,        $(VENDOR_SNAPSHOT_DIRS_EXCLUDED))
+$(call add_json_list, RecoverySnapshotDirsIncluded,      $(RECOVERY_SNAPSHOT_DIRS_INCLUDED))
+$(call add_json_list, RecoverySnapshotDirsExcluded,      $(RECOVERY_SNAPSHOT_DIRS_EXCLUDED))
+
 $(call add_json_bool, Treble_linker_namespaces,          $(filter true,$(PRODUCT_TREBLE_LINKER_NAMESPACES)))
 $(call add_json_bool, Enforce_vintf_manifest,            $(filter true,$(PRODUCT_ENFORCE_VINTF_MANIFEST)))