lalpulsar: glue.pipeline --> lal.pipeline

- knope_utils.py is modified
- this eliminates lalpulsar's only dependence on the glue package
- this patch is untested:  glue's pipeline.py was never ported to python 3, so any code relying on it has been non-functional for years.  this code is, therefore, almost certainly still broken in other ways, and it is left as an exercise for the pulsar group to determine how to repair it if needed.