Merge branch 't38670-remove-benchmark' into 'main'

.gitignore

.lint/ansible-apt-block-check.sh

.lint/ansible-lint.conf

CHANGELOG.md

doc/bench.md

doc/requirements.md

playbooks/bench-monitoring.yml

playbooks/bench.yml

playbooks/site.yml

requirements.yml

roles/docker/tasks/main.yml

roles/elastic/defaults/main.yml

roles/elastic/handlers/main.yml

roles/elastic/tasks/main.yml

roles/elastic/templates/apm-server.yml.j2

roles/elastic/templates/kibana.yml.j2

roles/metricbeat/defaults/main.yml

roles/metricbeat/handlers/main.yml

roles/metricbeat/tasks/main.yml

roles/metricbeat/templates/metricbeat.yml.j2