Updated DeploymentManager code to clean up Nodes collection update.
Updated DeploymentManager code to clean up Nodes collection update.

visor-vu/chariot,dcpssc/chariot,dcpssc/chariot,visor-vu/chariot-examples,visor-vu/chariot,visor-vu/chariot,dcpssc/chariot,visor-vu/chariot,dcpssc/chariot