Investigate SERVER_DOWN issue on bullseye

Something wonky happened between libldap `2.4.47` and `2.4.59` that causes bullseye's libldap `2.4.57` to give us `SERVER_DOWN` errors when attempting to connect:
```
Traceback (most recent call last):
File "/usr/local/lib/python3.9/site-packages/ldap/ldapobject.py", line 1196, in _apply_method_s
return func(self,*args,**kwargs)
File "/usr/local/lib/python3.9/site-packages/ldap/ldapobject.py", line 443, in simple_bind_s
msgid = self.simple_bind(who,cred,serverctrls,clientctrls)
File "/usr/local/lib/python3.9/site-packages/ldap/ldapobject.py", line 437, in simple_bind
return self._ldap_call(self._l.simple_bind,who,cred,RequestControlTuples(serverctrls),RequestControlTuples(clientctrls))
File "/usr/local/lib/python3.9/site-packages/ldap/ldapobject.py", line 329, in _ldap_call
reraise(exc_type, exc_value, exc_traceback)
File "/usr/local/lib/python3.9/site-packages/ldap/compat.py", line 44, in reraise
raise exc_value
File "/usr/local/lib/python3.9/site-packages/ldap/ldapobject.py", line 313, in _ldap_call
result = func(*args,**kwargs)
ldap.SERVER_DOWN: {'desc': "Can't contact LDAP server", 'errno': 9, 'info': '(unknown error code)'}
```

This isn't great because we tend not to pin our container images to a particular release. We have a lot of things that have `python:3.9.7` instead of `python:3.9.7-buster`. When these projects get rebuilt by OKD, stuff breaks because it can't talk to LDAP.