Create a stub method for interrupting NetworkRoute creation in order to proceed external-ip assignment.
Added parameters to send to vnet_plugin
Added parameters for NetworkRoute
Added some tests for global ip translation
Fixed test script for NAT.
Added shunit2 to acceptance-vnet
Merge branch 'master' into feature-vdc-vnet-global-nat

Conflicts:
	dcmgr/lib/dcmgr/models/hooks/vnet/vnet_hook.rb
Merge pull request #389 from axsh/feature-vdc-vnet-global-nat

Feature vdc vnet global nat