Returns the value for a given cgroup entry.
            A list is returned when multiple values are set.

def get_cgroup_item(self, key):
        """
            Returns the value for a given cgroup entry.
            A list is returned when multiple values are set.
        """
        value = _lxc.Container.get_cgroup_item(self, key)

        if value is False:
            return False
        else:
            return value.rstrip("\n")