ENH: adding useful output to the printself of polyline

Code/Common/otbPolyLineParametricPathWithValue.txx

@@ -81,6 +81,13 @@ namespace otb
   ::PrintSelf(std::ostream& os, itk::Indent indent) const
   {
     Superclass::PrintSelf(os, indent);
+    VertexListConstIteratorType it =  this->GetVertexList()->Begin();
+    while(it != this->GetVertexList()->End())
+    {
+      os << it.Value() << " - ";
+      it++;
+    }
+    os << std::endl;
   }
   
 } // end namespace otb