This reverts commit 2f461da8.

Since Galene is behind our frontend, no need to take care of the HTTPS certificates.

See merge request nexedi/slapos!880

This also pulls in crawshaw.io/sqlite because it is used by lonet.

Due to unknown yet reason ATS and Caddy are loosing connections to haproxy,
which results with increased amount of 5xx (about 0.5% more cases).

No known solution was found yet on haproxy side, but this kind of workaround
stabilises frontend and definitely drops amount of in-frontend 5xx. The
observed situation with this workaround is no more 5xx sourcing in frontend
itself.

See merge request nexedi/slapos!878

See https://galene.org
Use first official version (0.1)
Co-authored-by: Thomas Gambier <thomas.gambier@nexedi.com>

See merge request nexedi/slapos!868

Introduce a new "software release upgrade test", which tests a scenario of keating
an ERP5 instance with an old version of software release and then update it to
current version.

To support this test and because we are using this technique for most of slapos
softwares nowadays, configure zopes to restart automatically when their
configuration change.

See merge request nexedi/slapos!875

Confirms SlapOS ERP5 software release can be updated from
a reference version to current version

When root instance is updated to a new software release URL, it will re-request
all the instances with the new software release URL.
To make sure the new root instance does not appear has ready when it is
re-requested with new software release URL, introduce a promise that will check
that the instances requested by the root instance have the same software
release URL. For now we do this only for Zope instances, because they are
stateless and restart automatically on configuration changes, unlike stateful
instances like mariadb or ZEO that we don't restart automatically (yet ?).

We are using this pattern for most of our services since several
months without any issue, so let's also use it for zopes. This
makes automatic upgrade possible.

Also remove "zope running current products" promise, since we
restart we no longer need to check this.

moves python2 release to component/jupyter-py2 because it is required by ERP5
but not maintained anymore

moves to python 3 :
- test/test.py
- jupyter_notebook_config.py.jinja
- ERP5kernel.py

modifies custom.js to create a workaround for events issue
see (https://github.com/jupyter/notebook/issues/2499)

upgrades slapos.cookbook version to 1.0.171 to use zero_knowledge recipe
with python 3

adds jupyter partition check in software/erp5/test/test_erp5.py

Fixes compatibility with glibc >= 2.30 .
Update users to new usage pattern.

It's much easier to find the slave by it's reference than by it's title for
the cluster administrator, so use the reference in this case.

Fixes "caddy-frontend: Add promise for rejected slaves", even if title seemed
more human readable, but it's unusable.

Since haproxy does non-HTTP style checks to the python provided backend it
started to emit a lot of logs about broken pipe, which are not important
in context of testing and shall be silenced.

See https://en.wiktionary.org/wiki/instanciated :

> Misspelling of instantiated.

See merge request nexedi/slapos!858

See merge request nexedi/slapos!863

Allow each instance to support a zone list instead of a single zone.
Each slave is set for only one defined zone.

While caucase-updater aibcc was added, it was copy & pasted from aikc, and
by mistake it shared data_dir, which results with not working update of
certificates.

This fixes this issue introduced in "caddy-frontend: Setup backend client auth"

We are starting to use wendelin.core not only in Wendelin context.
So it makes sense to have it installed in base ERP5, like we already do for
example for NumPy and SciPy.

/reviewed-by @rafael, @jp
/reviewed-on nexedi/slapos!874

Having only one section [wendelin.core] instead of [wendelin.core] and
[wendelin.core-dev] is easier to handle in "we want to use such and such
particular version" scenarious without deciding in advance whether an SR needs
to inherit from wendelin/software.cfg or wendelin/software-dev.cfg

/reviewed-on nexedi/slapos!874

haproxy can be controlled with this socket, so it might be useful
to "expose" it - it's not really expose because we only use a
UNIX socket.