feat: OpenSearch limits, limitations, and differences from the upstream #1210

wojcik-dorota merged 15 commits intomainaiven/aiven-docs:mainfrom

MA-3643-add-differences-about-aiven-for-os-and-upstream-os-to-documentationaiven/aiven-docs:MA-3643-add-differences-about-aiven-for-os-and-upstream-os-to-documentationCopy head branch name to clipboard