feat(debug): Store OSError human debug output

update-firewall-source.py

@@ -125,6 +125,10 @@ internal_empty_ok = [default["key"] for default in CONST.CFG_KNOWN_DEFAULTS if d
 config = ConfigParser(defaults=internal_defaults,
                       converters={'list': lambda x: [i.strip() for i in x.split(',') if len(x) > 0]})
 config.read(CONST.CFG_DEFAULT_ABS_PATH)
+exit_code_desc = {
+    5: "Unable to open firewalld direct rules file for reading",
+    9: "Unable to open firewalld direct rules file for updating"
+}
 
 
 def print_section_header(