ilp logs are written into step directory, which then deleted

[HauHe]

When a model is infeasible gurobi produces a ilp file which can be useful to understanding why a model is infeasible. The file is written into the corresponding step directory. However, if the model is infeasible, this directory is deleted, which makes it difficult to understand why a model is infeasible...

[HauHe]

Perhaps the ilp should be written into the logs folder, @trevorb1?