Update for new computation environment routines.

Author: chrispbradley

src/python/fsi_tube_flow.py

@@ -212,8 +212,9 @@
 #================================================================================================================================
 
 # Get the computational nodes info
-numberOfComputationalNodes = iron.ComputationalNumberOfNodesGet()
-computationalNodeNumber    = iron.ComputationalNodeNumberGet()
+computationEnvironment = iron.ComputationEnvironment()
+numberOfComputationalNodes = computationEnvironment.NumberOfWorldNodesGet()
+computationalNodeNumber = computationEnvironment.WorldNodeNumberGet()
 
 #iron.OutputSetOn("Testing")