fix(CLI): Change behavior for config

* Only picked value allowed (nargs = ?)
* Default is 'all', not handled by argparse

bin/FofbTool

@@ -52,9 +52,10 @@ if __name__ == '__main__':
     parser.add_argument("--stop-ccn", action="store_true",
             help="Stop command for the ComBPM applications blocks.")
 
-    parser.add_argument("--configure", choices=["combpm", "ccn", "comcorr", "corr", "all", "every"], nargs="+",
+    parser.add_argument("--configure", choices=["combpm", "ccn", "comcorr", "corr", "all", "every"],
+            nargs='?', const='all',
             help="Configuration commands for the Fofb applications blocs."+
-            " 'all' is for all com, not configuring corrector. 'every' configure everything.")
+            " 'all' is for all com, not configuring corrector. 'every' configure everything. Default is 'all'")
 
     parser.add_argument("--start", action="store_true",
             help="Start command for the CCN and ComBPM applications blocks.")
@@ -99,16 +100,14 @@ if __name__ == '__main__':
     if args.stop or args.stop_ccn:
         FofbTool.Utils.stop_all_ccn()
 
-    if not args.configure is None:
-        for conf in args.configure:
-            if conf in ("combpm", "all", "every"):
-                FofbTool.Utils.conf_all_combpm()
-            if conf in ("comcorr", "all", "every"):
-                FofbTool.Utils.conf_all_comcorr()
-            if conf in ("ccn", "all", "every"):
-                FofbTool.Utils.conf_all_ccn()
-            if conf in ("corr", "every"):
-                FofbTool.Configuration.centralnode_configure_corr()
+    if args.configure in ("combpm", "all", "every"):
+        FofbTool.Utils.conf_all_combpm()
+    if args.configure in ("comcorr", "all", "every"):
+        FofbTool.Utils.conf_all_comcorr()
+    if args.configure in ("ccn", "all", "every"):
+        FofbTool.Utils.conf_all_ccn()
+    if args.configure in ("corr", "every"):
+        FofbTool.Configuration.centralnode_configure_corr()
 
     if args.start or args.start_combpm:
         FofbTool.Utils.start_all_combpm()