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>

secop/lib/__init__.py

@@ -94,10 +94,28 @@ class GeneralConfig:
         except KeyError:
             return default
 
+    def getint(self, key, default=None):
+        try:
+            return int(self.__getitem__(key))
+        except KeyError:
+            return default
+
     def __getattr__(self, key):
         """goodie: use generalConfig.<key> instead of generalConfig.get('<key>')"""
         return self.get(key)
 
+    def __setattr__(self, key, value):
+        if key == '_config':
+            super().__setattr__(key, value)
+            return
+        if hasattr(type(self), key):
+            raise AttributeError('can not set generalConfig.%s' % key)
+        self._config[key] = value  # for test purposes
+
+    @property
+    def initialized(self):
+        return bool(self._config)
+
 
 generalConfig = GeneralConfig()