feat(cli): Add the mossibility to dump configuration

* Also specify in doctring of load config that configuration are superseded

FofbTool/Configuration.py

@@ -38,7 +38,7 @@ def logdebugconf():
 def loadconfig(filepath):
     """
     Load a configuration file for the module.
-    It initialize the internal configuration.
+    It supersed the default configuration, if found.
 
     PARAMETERS
     ----------

scripts/FofbTool

@@ -52,6 +52,9 @@ if __name__ == '__main__':
     parser.add_argument("--stop-ccn", action="store_true",
             help="Stop command for the ComBPM applications blocks.")
 
+    parser.add_argument("--dump-configuration", type=argparse.FileType('w'),
+            help="Dump the current configuration in a file at the giver path.")
+
     parser.add_argument("--configure", choices=["combpm", "ccn", "comcorr", "corr", "all"],
             nargs='?', const='all',
             help="Configuration commands for the Fofb applications blocs."+
@@ -77,6 +80,11 @@ if __name__ == '__main__':
         FofbTool.Configuration.loadconfig(args.fileconfig)
     FofbTool.Configuration.logdebugconf()
 
+    if not args.dump_configuration is None:
+        FofbTool.Configuration.config.write(args.dump_configuration)
+        args.dump_configuration.close()
+
+
     ## Check running
     if not FofbTool.Utils.check_fofbnotrunning():
         logger.warning("FOFB is running")