Optimize tracks linked from redhat.com

[ryanj]

The following tracks which are featured on redhat.com should be updated to use a preset hot start group:

• [x] Red Hat OpenShift Playground 4-11
• [x] Getting Started with OpenShift for Developers
• [x] Use Red Hat OpenShift Pipelines
• [x] Logging in to an OpenShift Cluster
• [ ] Get started with Argo CD and GitOps with Red Hat OpenShift

Related work:

• [ ] Ask the RH.com team to update their playground selection to use our OpenShift 4-12 track?
• [ ] Update ALL of these tracks to use the OpenShift 4-12 preset?
• [ ] Consider using the shorter versions of "Getting Started with OpenShift" and/or "OpenShift Pipelines"?
• [ ] Figure out how to add the ArgoCD track to an existing preset group? Needs more CPU! Reduce the workload requirements for the ArgoCD demo app?!