Merge branch 't38273-extract-roles-reconfigurations' into 'main'

playbooks/postgres.yml

playbooks/site.yml

playbooks/tester.yml

playbooks/users.yml

roles/base/meta/main.yml

roles/celerity/README.md

roles/celerity/defaults/main.yml

roles/celerity/tasks/base.yml

roles/celerity/tasks/configure.yml

roles/celerity/tasks/configure/celerity-conf.yml

roles/celerity/tasks/install.yml

roles/celerity/tasks/main.yml

roles/celerity/vars/main.yml

roles/conf/defaults/main.yml

roles/conf/vars/main.yml

roles/fail2ban/README.md

roles/fail2ban/defaults/main.yml

roles/fail2ban/tasks/base.yml

roles/fail2ban/tasks/configure.yml

roles/fail2ban/tasks/configure/f2b-configure.yml