Incorrect configuration in apache2 for internal service port

An ironic based environment is misconfigured in the apache configuration, the ssl termination endpoint should be passing the requests to http://localhost:6365/ although it's passing it to http://localhost:6375/, the symptoms seen are:

$ openstack baremetal conductor list
SSL exception connecting to https://10.5.250.100:6385/v1/conductors: HTTPSConnectionPool(host='10.5.250.100', port=6385): Max retries exceeded with url: /v1/conductors (Caused by SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)')))

This behavior is currentl reproduced in a lab environment, although this same issue is being seen at the gate[0]

Here is the list of relevant open ports:

```
root@juju-d974dd-zaza-cf05be3e3598-10:/var/log/juju# ss -tpln | grep -P '(6385|6375|6365)'
LISTEN 0 4096 0.0.0.0:6385 0.0.0.0:* users:(("haproxy",pid=136051,fd=7))
LISTEN 0 128 0.0.0.0:6365 0.0.0.0:* users:(("ironic-api",pid=132954,fd=8),("ironic-api",pid=132954,fd=7),("ironic-api",pid=132579,fd=7))
LISTEN 0 4096 *:6385 *:* users:(("haproxy",pid=136051,fd=8))
LISTEN 0 511 *:6375 *:* users:(("apache2",pid=235171,fd=8),("apache2",pid=235170,fd=8),("apache2",pid=235169,fd=8))
```

Here it's the content of /etc/apache2/sites-enabled/openstack_https_frontend.conf:

```
Listen 6375
<VirtualHost 10.5.3.161:6375>
    ServerName 10.5.250.100
    SSLEngine on

    # This section is based on Mozilla's recommendation
    # as the "intermediate" profile as of July 7th, 2020.
    # https://wiki.mozilla.org/Security/Server_Side_TLS
    SSLProtocol all -SSLv3 -TLSv1 -TLSv1.1
    SSLCipherSuite ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
    SSLHonorCipherOrder off

    SSLCertificateFile /etc/apache2/ssl/ironic/cert_10.5.250.100
    SSLCertificateKeyFile /etc/apache2/ssl/ironic/key_10.5.250.100
    ProxyPass / http://localhost:6375/
    ProxyPassReverse / http://localhost:6375/
    ProxyPreserveHost on
    RequestHeader set X-Forwarded-Proto "https"
    KeepAliveTimeout 75
    MaxKeepAliveRequests 1000
</VirtualHost>
<Proxy *>
    Order deny,allow
    Allow from all
</Proxy>
<Location />
    Order allow,deny
    Allow from all
</Location>
```

Error in the gate:

```

2023-06-01 21:25:46.511409 | focal-medium | 2023-06-01 21:25:46 [INFO] raise exceptions.SSLError(msg)
2023-06-01 21:25:46.511437 | focal-medium | 2023-06-01 21:25:46 [INFO] keystoneauth1.exceptions.connection.SSLError: SSL exception connecting to https://172.16.220.230:6385/v1/conductors: HTTPSConnectionPool(host='172.16.220.230', port=6385): Max retries exceeded with url: /v1/conductors (Caused by SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)')))
```

[0] https://openstack-ci-reports.ubuntu.com/artifacts/80d/884252/8/check/jammy-zed/80dbfa2/