[NavierStokesNC][test] Adapt input files

test/freeflow/staggerednc/test_advection.input

-[TimeManager]
+[TimeLoop]
 DtInitial = 5 # [s]
 TEnd = 400 # [s]
 
@@ -16,4 +16,5 @@ MaxSteps = 10
 MaxRelativeShift = 1e-8
 
 [Vtk]
+AddVelocity = true
 WriteFaceData = false

test/freeflow/staggerednc/test_densitydrivenflow.input

-[TimeManager]
+[TimeLoop]
 DtInitial = 1e-2 # [s]
 # MaxTimeStepSize = 1e1
 TEnd = 1.5e3 # [s]
@@ -17,4 +17,5 @@ MaxSteps = 10
 MaxRelativeShift = 1e-8
 
 [Vtk]
+AddVelocity = true
 WriteFaceData = false

test/freeflow/staggerednc/test_purediffusion.input

-[TimeManager]
+[TimeLoop]
 DtInitial = 1e6 # [s]
 TEnd = 1e9 # [s]
 
@@ -16,4 +16,5 @@ MaxSteps = 10
 MaxRelativeShift = 1e-8
 
 [Vtk]
+AddVelocity = true
 WriteFaceData = false

test/freeflow/staggerednc/test_stokes2cni_advection.input

-[TimeManager]
+[TimeLoop]
 DtInitial = 5 # [s]
 TEnd = 400 # [s]
 
@@ -16,4 +16,5 @@ MaxSteps = 10
 MaxRelativeShift = 1e-8
 
 [Vtk]
+AddVelocity = true
 WriteFaceData = false

test/freeflow/staggerednc/test_stokes2cni_diffusion.input

-[TimeManager]
+[TimeLoop]
 DtInitial = 1e6 # [s]
 TEnd = 1e9 # [s]
 
@@ -16,4 +16,5 @@ MaxSteps = 10
 MaxRelativeShift = 1e-8
 
 [Vtk]
+AddVelocity = true
 WriteFaceData = false