Add the simplification function for show

When we use "zun show" to look up the information of a container, the current progress will display all the attributions of a container in sql. I think we can add a simplification function.
1. Let the user choose whether to display all the attributes. As default, just display several import attributions. But user can use an extended parameter to display all.
2. Other attributes that not in container table in sql such as the attached volumes should be displayed.
3. There is no need to get container information from docker driver to checkout the container status. Because the "update_containers_states" function does that.