[4.3.0] Mising option to disable AllowZoneDrifting

[tuxmaster]

The exists no option in the firewalld class to disable AllowZoneDrifting.
So this warning will logged:

WARNING: AllowZoneDrifting is enabled. This is considered an insecure configuration option. It will be removed in a future release. Please consider disabling it now.

[zeekus]

It appears the 'AllowZoneDrifting' is stored in the firewalld.conf file on Centos8. Here is a copy:

# AllowZoneDrifting
# Older versions of firewalld had undocumented behavior known as "zone
# drifting". This allowed packets to ingress multiple zones - this is a
# violation of zone based firewalls. However, some users rely on this behavior
# to have a "catch-all" zone, e.g. the default zone. You can enable this if you
# desire such behavior. It's disabled by default for security reasons.
# Note: If "yes" packets will only drift from source based zones to interface
# based zones (including the default zone). Packets never drift from interface
# based zones to other interfaces based zones (including the default zone).
# Possible values; "yes", "no". Defaults to "yes".
AllowZoneDrifting=yes

[tuxmaster5000]

On the current version the setting can changed.

[kenyon]

Fixed by #301.