Refactor and test NetworkHelper#sendCommandsToRouterWithNoAnswers
Merge branch 'cmd-visitor' of github.com:schubergphilis/CloudStack into cmd-visitor

Conflicts:
	server/src/com/cloud/network/router/VpcVirtualNetworkApplianceManagerImpl.java
	server/src/org/apache/cloudstack/network/topology/AdvancedNetworkTopology.java