Make the code work for entering the configuration step. The name
of the configured node will show up. Change the semantic of the
_is_end method to return how many chars make up the end.
Currently, it's tested on openbsc and osmo-pcu.
Scripts: osmotestvty.py osmodumpdoc.py osmotestconfig.py
The scripts are designed to be run from make check,
but can be run independently as well.
As a general rule, run them in the top dir of a project.