This solves the issue of accessing any file hosted by the apache in every test node when there is no IPv6 access for the client.

Conflicts:
	software/erp5testnode/software.cfg

This updates links to slapos.git in the tree to point to new location.

We do so whole-tree except one place in stack/monitor/ :

    [download-monitor-static]
    recipe = hexagonit.recipe.download
    url = http://git.erp5.org/gitweb/slapos.git/snapshot/930be99041ea26b7b1186830e5eb56ef0acc1bdf.tar.gz
    ...

(see d8800c0b "monitor: Download statics files from snapshot")

The reason we do not update that link yet, is that 930be99041ea26b7b1186830e5eb56ef0acc1bdf
is a tree object and gitlab does not allow to dowload tree object as archives (yet ?)

So for now that link stays unconverted - and we'll think how to do with it.

No need to expose this slapproxy to the outside.

Add new variables used in testnode software.
Add new rules to httpd, in order to make depositories accessible
by obfuscation.

Use shellinabox on testnode with self provided
shell command thanks to busybox.