8743d6881d
Changing an external network to non external or vise versa is not supported by the plugin (backend network should be added/removed). This patch blocks this option. This fix required a massive change in the unittest, becasue many neutron tests first create the network, and later chagne it to be external. Change-Id: Iac56085ce772915fbe3d9aa12ce031c5cb12c21b