Add Infrasec readiness checklist
Security review to be merged into !109 (merged)
closes https://gitlab.com/gitlab-com/gl-security/appsec/appsec-reviews/-/issues/151
Edited by Philippe Lafoucrière
Security review to be merged into !109 (merged)
closes https://gitlab.com/gitlab-com/gl-security/appsec/appsec-reviews/-/issues/151