Use by default latest version

Allow to configure the number of days to keep logs

For now we just use a directory inside the partition as shared parts,
but we could also maybe one day also inject the shared_part_list from
this slapos.

This reverts commit 17b896e4.

This is possibly incorrect approach. Current work which detected this issue
will be recoded to workaround it.

Software tested inside of erp5testnode uses default monitor port, so free
it for them.

Use the latest firefox and geckodriver to support file uploading tests.

Since Caddy 0.11.1, certificates has to match sites
(Thanks Luke)

Installing from master is problematic because when master does not build
we don't have test results and we don't see that it's broken.

/reviewed-on !474

We don't need ssl features in shellinabox as we make it listen on a unix socket.
This allows to remove the dependency between shellinabox and openssl.

also use a real bash and not busybox

Filename is split as an URL path, and joined in OS-dependent manner.
Remove corresponding comment in all buildout.hash.cfg files.

/reviewed-on !291

  If someone is developing an erp5 test node inside a webrunner, there is no reason to put entire data on resilience.

/reviewed-on !172

/reviewed-on !169

  Move instance-monitor.cfg to buildout.hash.cfg