Added an empty test for vnet_isolation
Created mussel module
Added a wrapper to invoke mussel.sh
Parse response into hash
'describe' and 'it' are now aliased as 'feature' and 'scenario'.
Renamed VdcVnetSpec to Mussel
Mussel creates ssh_key_pair for instance
Parse vif params
Added suffix to mussel network create
Fixed vifs file creation
Added response class
wait until vif ready
Implemeted destroy
Added update
Added helper_methods.rb
Sample spec
Merge pull request #432 from axsh/feature-integration-test

Feature integration test