Ensure the certificates provided by the user actually valid and match, otherwise prevent it write bad certificates.

This allows enabling replication later without requiring a mariadb restart.
For now, nothing passes the internal server-id instance parameter, so
replication is not.

so that build will not fail if the directory was left during previous
builds.

The promise is-process-older-than-dependency-set still fails
if necessary, but does not kill the zope anymore.

  Using ServerAliases %{SERVER_NAME} would not cause a change of URL to something
  diferent them it was requested.

  Include software-type in order to use multiple forms/schemas for
     the same software-type, like simplified or advanced.
  Include shared to include schemas for slaves.

  A nicer form

because Products.ExternalEditor 2.0.0's dtml is not based on Zope2
OFS's one and it drops icons, sort by last_modified etc in ZMI.

because the recent version of paramiko (>= 2.0.0), that is a part of
slapos.toolbox's dependencies, depends on cryptography insead of
pycrypto.

Desactivate testing temporary.