'Ensure that group_name is absent by deleting it if necessary
:param group_name: string - the name of the clc server group to delete
:param parent_name: string - the name of the parent group for group_name
:return: changed, group'

def _ensure_group_is_absent(self, group_name, parent_name):

    changed = False
    group = []
    results = []
    if self._group_exists(group_name=group_name, parent_name=parent_name):
        if (not self.module.check_mode):
            group.append(group_name)
            result = self._delete_group(group_name)
            results.append(result)
        changed = True
    return (changed, group, results)
