Once a network is associated with project, I can’t delete this network with ‘nova-manage network delete’.
As you know, I can delete network by scrubbing the project with ‘nova-manage project scrub’.
However it is too much.
The cause of this problem is there is no modify command of network attribute.
This branch adds 'nova-manage network modify' command.
In this branch, we only support project and host value modifications.
Another attributes are in future work.