Pin ERP5 revision and slapos.cookbook

Remove slapos.recipe.build from stack/erp5/buildout.cfg because is already defined in stack/slapos.cfg
Put back ERP5 and slapos.cookbook in development mode
slapos-testing: remove jio and officejs tests.
pbs: fixed '==' in bash code
fixup! slapos-testing: remove jio and officejs tests.
removed unused bully script - resilience now simpler and faster.
slapos.cookbook 0.90
resilience: use slapos.cookbook 0.90 (to avoid double request)
stack/lapp: unpick rdiff-backup, already picked by stack/resilient
fixup! slapos-testing: remove jio and officejs tests.
fixed pbs test
kvm: added back ipv6 parameter
Revert "kvm: added back ipv6 parameter"

This reverts commit 01190bdab5e47bb63fce2fc0dd0406bb89e6d196.
Fix json schemas.
slapos-testing: add missing eggs.

And more importantly: all their dependencies, like jinja2. Tests are failing because dependencies can't be found.
libatlas: use uname -m to detect arch.

output of uname -p is "unknown" for soem processors, leading to use 32bits on 64bits machine.
apache-frontend: update TODO
version up : groonga 4.0.7 and mroonga 4.07.
version up : wget 1.16.
version up : gettext 0.19.3.