os-OPNWAF: subfolder weren't able to open to public/HOST Header not (optionally) forwarded to Backend and LogLevel not changeable

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Describe the bug

LogLevel not changeable to get diagnose on failures
ProxyPreserveHost not able to enable to get backend server SNI based vhosts (basically functionality for ages since HTTP/1.1 !!!) (e.g. backend server holds https://services.company.com, https://wiki.company.com, https://selfdesk.comany.com on regular ports 80/443 by SNI)
Subfolders cannot be opened to public while main/parent path is forbidden. (e.g. https://services.company.com and open https://services.comany.com/ticketsystem/ )

Since there is no public repository here the suggested working diff. Feel free to modify it to coding styles and there is also need todo "voltage" changes I haven't yet heard about... And since there is no public repository I also cannot use opnsense-patch for this task

root@OPNsense:~ # diff -u /usr/local/opnsense/service/templates/OPNsense/Apache/gateway_vhosts.conf.orig_Reiner030 /usr/local/opnsense/service/templates/OPNsense/Apache/gateway_vhosts.conf
--- /usr/local/opnsense/service/templates/OPNsense/Apache/gateway_vhosts.conf.orig_Reiner030    2024-06-19 12:07:52.000000000 +0200
+++ /usr/local/opnsense/service/templates/OPNsense/Apache/gateway_vhosts.conf   2024-06-27 19:02:23.343907000 +0200
@@ -39,7 +39,7 @@
     Options -FollowSymLinks
     Options -Indexes
     Options -ExecCGI
-    LogLevel warn
+    LogLevel {% if virtualserver.props.LogLevel|default('Warn') == 'Debug'%}Debug{% else %}Warn{% endif %}
     ProxyRequests Off
     SSLProxyEngine On
     SSLProxyCheckPeerName {% if virtualserver.props.SSLProxyCheckPeerName|default('1') == '1'%}On{% else %}Off{% endif %}
@@ -106,6 +106,10 @@
             Require ip {{address}}
 {%              endfor %}
         </RequireAny>
+{%          else %}
+        <RequireAny>
+            Require all granted
+        </RequireAny>
 {%          endif %}

 {%      if location.PassTLSHeaders|default("") != "" %}
@@ -115,7 +119,7 @@
 {%          endfor %}
 {%      endif %}

-        ProxyPreserveHost Off
+        ProxyPreserveHost {% if virtualserver.props.ProxyPreserveHost|default('1') == '1'%}On{% else %}Off{% endif %}
         ProxyPass "balancer://{{location['@uuid']}}/"
         ProxyPassReverse "balancer://{{location['@uuid']}}/"
     </Location>

opnsense / plugins

os-OPNWAF: subfolder weren't able to open to public/HOST Header not (optionally) forwarded to Backend and LogLevel not changeable #4064