Conflicts:
	software/erp5/software.cfg

Component used are 6tunnel and haproxy.

http://toxygen.net/6tunnel/

This reverts commit 11150b66.

Hack was needed in damaged environment, which did not managed to have correct
symlinks.

On some platforms it is required.

If multiple calls manage_addERP5Site are done in parallel by this script,
it cause conflict error during site creation.

1.3.0 has building process which has been found to be cumbersome on some platforms.

Only check if cloudooo and openoffice port is listenning.

This definition is present already into a more appropriate place, on
erp5-promise.

The erp5 is created by erp5-bootstrap, this promise assert if the site
is already created.

Conflicts:
	software/erp5/software.cfg

All ERP5 profile is now in a single place.
Moreover, use slapos.cfg stack.