Do not mark demotion ready before database checks

tests/test-demote-prepare.py

@@ -43,7 +43,10 @@ result = plugin.demote_prepare(
 )
 
 assert result["ocf_rc"] == 0
-assert result["ready"] is True
+assert result["ready"] is False
+assert result["identity_validated"] is True
+assert result["reason"] == "database_checks_pending"
+assert result["checks"]["database_checks"] is False
 assert result["mutation"] is False
 assert result["successor_node"] == "david-prodesk"
 print("valid_prepare            accepted")