The tools are so far badly under-documented. Alleviate that by comprehensive
description and examples shown by -h option output. Hint at that from the
README.
Change-Id: I94dcad257558b917cb54fc877122594cd164f496
After I30cdf0f85b2a60a235960911c9827f4129da40db,
* the osmo_interact_{vty,ctrl}.py can no longer import osmo_interact_common,
since it was moved to scripts/ in error.
* the osmo_verify_{vty,ctrl} scripts can no longer import osmo_interact_{vty,ctrl},
since it is also in scripts/. Notably, the osmo_interact_{vty,ctrl}.py also
served as scripts while being modules at the same time, which is not good.
Fix these issues by adding a new osmopy/osmo_interact/ submodule with
osmopy/osmo_interact/common.py, /vty.py and /ctrl.py as modules, and add in
scripts thin wrappers that invoke the modules' main().
Change-Id: I40a37b212274cb70ebb1e1d9d1b3743eb2d64d05