docs: def get(key, default=''):
      '''
      .. versionadded: 0.14.0
  
      Attempt to retrieve the named value from opts, pillar, grains of the master
      config, if the named value is not available return the passed default.
      The default return is an empty string.
  
      The value can also represent a value in a nested dict using a ":" delimiter
      for the dict. This means that if a dict looks like this::
  
          {'pkg': {'apache': 'httpd'}}
  
      To retrieve the value associated with the apache key in the pkg dict this
      key can be passed::
  
          pkg:apache
  
      This routine traverses these data stores in this order:
  
      - Local minion config (opts)
      - Minion's grains
      - Minion's pillar
      - Master config
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' config.get pkg:apache
      '''
      ret = salt.utils.data.traverse_dict_and_list(__opts__, key, '_|-')
      if ret != '_|-':
          return ret
      ret = salt.utils.data.traverse_dict_and_list(__grains__, key, '_|-')
      if ret != '_|-':
          return ret
      ret = salt.utils.data.traverse_dict_and_list(__pillar__, key, '_|-')
      if ret != '_|-':
          return ret
      ret = salt.utils.data.traverse_dict_and_list(__pillar__.get('master', {}), key, '_|-')
      if ret != '_|-':
          return ret
      return default