try to merge between 2.8.x and master

Jenkinsfile

behat.yml

cron/centAcl-Func.php

cron/centAcl.php

cron/centreon-backup.pl

doc/en/administration_guide/partitioning/index.rst

doc/en/api/clapi/objects/broker_cfg.rst

doc/en/conf.py

...n/exploitation_guide/graphic_management/02personalize.rst

doc/en/installation/from_packages.rst

doc/en/release_notes/centreon-2.7/index.rst

doc/en/release_notes/centreon-2.8/centreon-2.8.5.rst

doc/en/upgrade/from_packages.rst

doc/fr/administration_guide/partitioning/index.rst

doc/fr/api/clapi/objects/contacts.rst

doc/fr/release_notes/centreon-2.7/index.rst

doc/fr/release_notes/centreon-2.8/centreon-2.8.5.rst

features/CentreonWithKnowledge.feature

features/CustomViews.feature

features/GeneratePoller.feature