incompatible with haproxy rev >= 75 on jammy

[Mitch Burton]

The version of haproxy in revision 75 of that charm on jammy is no longer compatible with the landscape-server charm:

[ALERT] (4962) : parsing [/etc/haproxy/haproxy.cfg:49] : The 'reqrep' directive is not supported anymore since HAProxy 2.1. Use 'http-request replace-path', 'http-request replace-uri' or 'http-request replace-header' instead.
[ALERT] (4962) : parsing [/etc/haproxy/haproxy.cfg:58] : The 'reqrep' directive is not supported anymore since HAProxy 2.1. Use 'http-request replace-path', 'http-request replace-uri' or 'http-request replace-header' instead.
[ALERT] (4962) : parsing [/etc/haproxy/haproxy.cfg:67] : The 'reqrep' directive is not supported anymore since HAProxy 2.1. Use 'http-request replace-path', 'http-request replace-uri' or 'http-request replace-header' instead.
[ALERT] (4962) : parsing [/etc/haproxy/haproxy.cfg:76] : The 'reqrep' directive is not supported anymore since HAProxy 2.1. Use 'http-request replace-path', 'http-request replace-uri' or 'http-request replace-header' instead.
[ALERT] (4962) : Error(s) found in configuration file : /etc/haproxy/haproxy.cfg
[ALERT] (4962) : Fatal errors found in configuration.

Related error on the landscape-server unit

unit-landscape-server-2: 17:02:28 ERROR unit.landscape-server/2.juju-log website:12: Uncaught exception while in charm code:
Traceback (most recent call last):
  File "/var/lib/juju/agents/unit-landscape-server-2/charm/src/settings_files.py", line 163, in write_ssl_cert
    ssl_cert_fp.write(b64decode(ssl_cert.encode()))
  File "/usr/lib/python3.10/base64.py", line 87, in b64decode
    return binascii.a2b_base64(s)
binascii.Error: Invalid base64-encoded string: number of data characters (1449) cannot be 1 more than a multiple of 4

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/var/lib/juju/agents/unit-landscape-server-2/charm/./src/charm.py", line 1004, in <module>
    main(LandscapeServerCharm)
  File "/var/lib/juju/agents/unit-landscape-server-2/charm/venv/ops/main.py", line 441, in main
    _emit_charm_event(charm, dispatcher.event_name)
  File "/var/lib/juju/agents/unit-landscape-server-2/charm/venv/ops/main.py", line 149, in _emit_charm_event
    event_to_emit.emit(*args, **kwargs)
  File "/var/lib/juju/agents/unit-landscape-server-2/charm/venv/ops/framework.py", line 354, in emit
    framework._emit(event)
  File "/var/lib/juju/agents/unit-landscape-server-2/charm/venv/ops/framework.py", line 830, in _emit
    self._reemit(event_path)
  File "/var/lib/juju/agents/unit-landscape-server-2/charm/venv/ops/framework.py", line 919, in _reemit
    custom_handler(event)
  File "/var/lib/juju/agents/unit-landscape-server-2/charm/./src/charm.py", line 602, in _website_relation_changed
    write_ssl_cert(haproxy_ssl_cert)
  File "/var/lib/juju/agents/unit-landscape-server-2/charm/src/settings_files.py", line 165, in write_ssl_cert
    raise SSLCertReadException(
settings_files.SSLCertReadException: Unable to decode b64-encoded SSL certificate

Resolving this will be required to move forward on LP: #2040203