Subo apagado de máquinas virtuales totalmente implementado.

 On branch issue_20
 Changes to be committed:

	modified:   clusterServer/connector/clusterServerConnector.py
	modified:   clusterServer/connector/commandsHandler.py
	modified:   clusterServer/connector/webServerEndpoint.py
	modified:   clusterServer/reactor/clusterServerReactor.py