[Crowbar] How to quickly test different network settings

[Martin Mailand]

Hi,
how could I test different network settings quickly?
I tried on a already install admin node.

1. Change the file 
/opt/dell/barclamps/network/chef/data_bags/crowbar/bc-template-network.json
2. run install admin.crowbar.org on the admin node.
3. Did a reinstall of the client node.

But nothing in the network config of the client node changed, do I 
really have to reinstall the admin node every time?

-martin