Merge #2771

2771: Sanitize logs as appropriate r=mergify[bot] a=nextgens

## What type of PR?

enhancement

## What does this PR do?

- Sanitize logs as appropriate. 
- change the healthcheck of radicale to something less verbose
- disable hardened-malloc if we detect a processor not supporting the AVX extension set

Should we backport something like that? It could be argued it's a bugfix.

### Related issue(s)
- close #2644 
- close #2764
- #2541

## Prerequisites
Before we can consider review and merge, please make sure the following list is done and checked.
If an entry in not applicable, you can check it or remove it from the list.

- [ ] In case of feature or enhancement: documentation updated accordingly
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>

webmails/start.py

@@ -11,7 +11,6 @@ from socrate import conf, system
 
 env = os.environ
 
-logging.basicConfig(stream=sys.stderr, level=env.get("LOG_LEVEL", "WARNING"))
 system.set_env(['ROUNDCUBE','SNUFFLEUPAGUS'])
 
 # jinja context