Added more error checking to a line in removeTenantNetwork
Added name support for init-script, more below..

* Openstack security group rules that already exist will not throw errors when
 the rule already exists
* Openstack network support for router interfaces, ports changed to allow
 naming the specific port (Helps identify problem ports by username)
* Updated support for 'is_active' to be more restrictive, was necessary for
 testing Atmosphere
* Changed atmosphere-initialization to look for 'secrets' not 'settings'
	modified:   rtwo/driver.py
	modified:   rtwo/drivers/openstack_network.py
	modified:   rtwo/drivers/openstack_user.py
	modified:   rtwo/identity.py
	modified:   rtwo/settings.py
Version. 0.1.8-dev-3 - Settings to secrets change, updates to OS networking and user