Bug when the main configuration file of a command is empty

[fmenabe]

The main configuration file of a command is a YAML file (the file named after the leaf command; for example, conf/users/add.yml of the users add command) . This should be a dict as each key in the file is loaded as a configuration parameter to the module.

If the file is empty, the module crash with this exception:

  ...
  File "/tmp/test/env/lib/python3.7/site-packages/clg/conf/src.py", line 50, in init
    self.load_dir(conf_dir, clg.config, commands)
  File "/tmp/test/env/lib/python3.7/site-packages/clg/conf/src.py", line 97, in load_dir
    self.load_cmd_file(cmd_filepath)
  File "/tmp/test/env/lib/python3.7/site-packages/clg/conf/src.py", line 76, in load_cmd_file
    for param, value in conf.items():
AttributeError: 'NoneType' object has no attribute 'items'