[ECOINT-117] Add Gatling Enterprise integration (DataDog#2669)

* Add Gatling Enterprise integration

* Update Gatling Enterprise integration

* Update Gatling Enterprise integration

* Update Gatling Enterprise integration

* Update Gatling Enterprise integration

* add data collected in readme and codeowners entry

---------

Co-authored-by: dd-pub-platform[bot] <157534740+dd-pub-platform[bot]@users.noreply.github.com>
Co-authored-by: David Feng <david.feng@datadoghq.com>

Author: dd-pub-platform[bot]

.github/CODEOWNERS

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 /hawkeye_by_neubird/                        @DataDog/ecosystems-review
 /zilliz_cloud_zilliz_cloud/                 @DataDog/ecosystems-review
 /appomni/                           @DataDog/ecosystems-review
+/gatling_enterprise/                           @DataDog/ecosystems-review
 
 /downdetector/                             @DataDog/ecosystems-review
 

gatling_enterprise/CHANGELOG.md

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+# CHANGELOG - Gatling Enterprise
+
+## 1.0.0 / 2025-05-27
+
+_**Added**_:
+
+* Initial Release

gatling_enterprise/README.md

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+# Gatling Enterprise
+
+## Overview
+
+Gatling Enterprise is a load testing platform designed to help teams validate application scalability and performance under real-world traffic conditions.
+
+With the Datadog integration, teams can investigate performance issues by correlating load test metrics such as response times, throughput, and errors with infrastructure data tracked in Datadog.
+
+Gatling Enterprise sends metrics to Datadog, allowing engineering and SRE teams to centralize performance insights and improve decision-making around scalability and reliability.
+
+
+## Setup
+
+> **Note**: This integration is available for Gatling Enterprise customers. To learn more about Gatling Enterprise and get started for free, visit [gatling.io/products][1].
+
+1. In Datadog, navigate to **Integrations**, select the Gatling Enterprise tile, and click **Install Integration**.
+
+2. In your Gatling control-plane installation, edit your [configuration file][2]. In the section `system-properties`, add the parameters as follows. Replace YOUR_API_KEY with your [Datadog API key][3] and use the correct [Datadog site][4] for your organization:
+
+```bash
+control-plane {
+  locations = [
+    {
+      id = "prl_example"
+      # ... other configuration for your location
+      system-properties {
+        "gatling.enterprise.dd.api.key" = "YOUR_API_KEY" # Fill your API key here
+        "gatling.enterprise.dd.site" = "datadoghq.com"  # Replace with your Datadog site
+      }
+    }
+  ]
+}
+```
+
+3. Deploy and restart your control plane
+
+
+## Data Collected
+
+The Gatling Enterprise integration gathers all metrics for databases, nodes, and shards.
+
+
+### Metrics
+
+See [metadata.csv][6] for a list of metrics provided by this integration.
+
+## Uninstallation
+
+1. In Datadog, navigate to **Integrations**, select the Gatling Enterprise tile, and click **Uninstall Integration**.
+
+2. In your Gatling control-plane installation, edit your [configuration file][5]. In the section `system-properties`, remove the lines containing `gatling.enterprise.dd`.
+   
+3. Deploy and restart your control plane.
+
+## Support
+
+Need help? Contact [Gatling Enterprise support][7].
+
+
+
+[1]: https://gatling.io/products
+[2]: https://docs.gatling.io/reference/install/cloud/private-locations/introduction/
+[3]: https://docs.datadoghq.com/account_management/api-app-keys/
+[4]: https://docs.datadoghq.com/getting_started/site/
+[5]: https://docs.gatling.io/reference/install/cloud/private-locations/introduction
+[6]: https://github.com/DataDog/integrations-extras/blob/master/gatling_enterprise/metadata.csv
+[7]: https://gatlingcorp.atlassian.net/servicedesk/customer/portal/8