This adds the promtail version used in the setup to a file and adds
an installation step downloading promtail, if the installation is not
run in `dryrun`-mode.
Change-Id: I1127220a57b2610b5c4458ce2205077706a860e6
The scripts were written in bash. Using bash became quite unwieldy.
Python by nature can deal well with yaml and is thus better suited
in dealing with the yaml-based configuration files. This change
rewrites the original scripts staying as close as possible to the
original ones.
Right now, the python scripts call subprocesses a lot to work with
the tools, which were already used before. At least for yaml-
templating there may be better tools that have a python integration,
which could be used in the future.
Change-Id: Ida16318445a05dcfdada9c7a56a391e4827f02e7
