It seems that <= works only for one section (parameters from deeper sections)
are not available on top one.

This reverts commit 6a1dc3da.

It seems that more then one section with <= is not supported correctly.

Storage name does not map required file name.

In order to simplify generation, do not care yet about -instance suffix.

Zeo driven configuration is capable to generate Zope connection strings. Handle
global Zope related keys.

Turn on offline mode, reuse eggs.

They have to be passed thourght slapos.recipe.template.

Dirty fast way to instantiate ERP5: TidStorage, Zope, Zeo, haproxy, apache on
one partition.