enhance logging

- bin/secop-server options -v and -q applied to console logger only
- level for logfile taken from general config
- option for automatic deletion of old logfiles
- added 'comlog' level (between debug and info)

This allows to run the servers by default with 'comlog' level on
the logfiles, which helps a lot for analyzing very rare communication
errors in retrospect.

to avoid spamming of the normal log files, comlog data is stored
separately, one file per communicator

+ redesign of remote logging (no more need of LoggerAdapter)

Change-Id: Ie156a202b1e7304e50bbe830901bc75872f6ffe2
Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/27427
Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>

bin/secop-server

@@ -27,12 +27,11 @@ import sys
 import argparse
 from os import path
 
-import mlzlog
-
 # Add import path for inplace usage
 sys.path.insert(0, path.abspath(path.join(path.dirname(__file__), '..')))
 
 from secop.lib import generalConfig
+from secop.logging import logger
 from secop.server import Server
 
 
@@ -87,9 +86,9 @@ def main(argv=None):
 
     loglevel = 'debug' if args.verbose else ('error' if args.quiet else 'info')
     generalConfig.init(args.gencfg)
-    mlzlog.initLogging('frappy', loglevel, generalConfig.logdir)
+    logger.init(loglevel)
 
-    srv = Server(args.name, mlzlog.log, cfgfiles=args.cfgfiles, interface=args.port, testonly=args.test)
+    srv = Server(args.name, logger.log, cfgfiles=args.cfgfiles, interface=args.port, testonly=args.test)
 
     if args.daemonize:
         srv.start()