Rework ogcli set mode command

This patch adapts the command to the fixed POST /modes request. It can
now be called with something like: ogcli set modes --scope-name=pc12
--mode=pxe

NOTE: This inherits from the legacy setclientmode script and requires
scope names to be unique. This should be fixed in the future in case
it's convenient to have duplicated scope names.

cli/objects/modes.py

@@ -18,21 +18,16 @@ class OgModes():
 	@staticmethod
 	def set_modes(rest, args):
 		parser = argparse.ArgumentParser()
-		parser.add_argument('--scope-id',
+		parser.add_argument('--scope-name',
 				    nargs=1,
 				    required=True,
-				    help='ID of the scope')
-		parser.add_argument('--scope-type',
-				    nargs=1,
-				    required=True,
-				    help='Type of the scope')
+				    help='Name of the scope (room or computer)')
 		parser.add_argument('--mode',
 				    nargs=1,
 				    required=True,
 				    help='Mode for the scope')
 		parsed_args = parser.parse_args(args)
 
-		payload = {'scope': {'id': int(parsed_args.scope_id[0]),
-				     'type': parsed_args.scope_type[0]},
+		payload = {'scope_name': parsed_args.scope_name[0],
 			   'mode': parsed_args.mode[0]}
 		r = rest.post('/modes', payload=payload)