Current configuration was not using site.zcml, now it is fetched from
zope.

Provide simple way of package activation.

Install z3c.deadlockdebugger with required dependency and activate it if
required.

investigation will be needed

the bt erp5_accounting_l10n_fr_m9 is not inside the
repository and it is not used any more theses days

This reverts commit d64008dd.

Unfortunately innobackupex manual page lied about possibility to pass
directly path of backup agent, so it is required to rely on PATH
manipulation.

Because https prompts buildout process, use http instead

runUnitTest finding all tests

It is possible to tell to innobackupex full path of backup agent, and as
explicit shall be preferred, use such way.

zerokspot.recipe.git calls git binary, but it is not possible to control
on part level which git shall be used.

Rather than creating each and altering them later.
Also, factorise a few property accesses.
Also, move setInitialState call closer to state creation code.

Created workflow is not empty, and that's the whole point of this code.