Remove non-Oracle Linux 9 support from salt states

Simplifies salt states, map files, and modules to only support
Oracle Linux 9, removing all Debian/Ubuntu/CentOS/Rocky/AlmaLinux/RHEL
conditional branches.

salt/firewall/init.sls

@@ -27,14 +27,12 @@ iptables_config:
     - source: salt://firewall/iptables.jinja
     - template: jinja
 
-{%   if grains.os_family == 'RedHat' %}
 disable_firewalld:
   service.dead:
     - name: firewalld
     - enable: False
     - require:
       - file: iptables_config
-{%   endif %}
 
 iptables_restore:
   cmd.run:
@@ -44,7 +42,6 @@ iptables_restore:
     - onlyif:
       - iptables-restore --test {{ iptmap.configfile }}
 
-{%   if grains.os_family == 'RedHat' %}
 enable_firewalld:
   service.running:
     - name: firewalld
@@ -52,7 +49,6 @@ enable_firewalld:
     - onfail:
       - file: iptables_config
       - cmd: iptables_restore
-{%   endif %}
 
 {% else %}
 

salt/firewall/ipt.map.jinja

@@ -1,14 +1,6 @@
-{% set iptmap = salt['grains.filter_by']({
-    'Debian': {
-        'service': 'netfilter-persistent',
-        'iptpkg': 'iptables',
-        'persistpkg': 'iptables-persistent',
-        'configfile': '/etc/iptables/rules.v4'
-    },
-    'RedHat': {
-        'service': 'iptables',
-        'iptpkg': 'iptables-nft',
-        'persistpkg': 'iptables-nft-services',
-        'configfile': '/etc/sysconfig/iptables'
-    },
-}) %}
+{% set iptmap = {
+    'service': 'iptables',
+    'iptpkg': 'iptables-nft',
+    'persistpkg': 'iptables-nft-services',
+    'configfile': '/etc/sysconfig/iptables'
+} %}