Currently, the ACM/OCM-io Argo CD Agent addon requires a separate username and password for spoke to hub authentication, unlike other ACM/OCM addons which use foundation certificate based authentication post registration. By implementing certificate authentication in the Argo CD Agent project, we will align it with the standard security model already used by other ACM/OCM addons, remove the need for username and password credentials authentication.

This task is for designing the solution and getting it signed off by the Argo CD Agent maintainer. The implementation will be done in https://issues.redhat.com/browse/ACM-18058