Add security partner doc pages

doc/integration/README.md

@@ -39,6 +39,11 @@ GitLab can be integrated with the following external services to enhance securit
 
 GitLab also provides features to improve the security of your own application. For more details see [GitLab Secure](../user/application_security/index.md).
 
+## Security partners
+
+GitLab has integrated with several security partners. For more information, see
+[Security partners integration](security_partners/index.md).
+
 ## Continuous integration
 
 GitLab can be integrated with the following external service for continuous integration:

doc/integration/security_partners/index.md

+---
+stage: Protect
+group: Container Security
+info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
+type: index
+---
+
+# Security partner integrations
+
+You can integrate GitLab with its security partners. This page has information on how do this with
+each security partner:
+
+- [Anchore](https://docs.anchore.com/current/docs/using/integration/ci_cd/gitlab/)