firewalld: Add support for firewalld port forwarding

Fixes: ansible-collections/ansible.posix#100

docs/ansible.posix.firewalld_module.rst

@@ -173,6 +173,21 @@ Parameters
                         <div>Must be in the form PORT/PROTOCOL or PORT-PORT/PROTOCOL for port ranges.</div>
                 </td>
             </tr>
+            <tr>
+                <td colspan="1">
+                    <div class="ansibleOptionAnchor" id="parameter-"></div>
+                    <b>port_forward</b>
+                    <a class="ansibleOptionLink" href="#parameter-" title="Permalink to this option"></a>
+                    <div style="font-size: small">
+                        <span style="color: purple">string</span>
+                    </div>
+                </td>
+                <td>
+                </td>
+                <td>
+                        <div>Port and protocol to forward using firewalld.</div>
+                </td>
+            </tr>
             <tr>
                 <td colspan="1">
                     <div class="ansibleOptionAnchor" id="parameter-"></div>
@@ -360,9 +375,13 @@ Examples
         permanent: yes
         icmp_block: echo-request
 
-    - name: Redirect port 443 to 8443 with Rich Rule
+    - name: Redirect port 443 to 8443
+      become: yes
       ansible.posix.firewalld:
-        rich_rule: rule family=ipv4 forward-port port=443 protocol=tcp to-port=8443
+        port_forward:
+          - port: 443
+            proto: tcp
+            toport: 8443
         zone: public
         permanent: yes
         immediate: yes
@@ -370,7 +389,6 @@ Examples
 
 
 
-
 Status
 ------