Configure link cluster configuration

[etavela]

• [x] Rename kind_tls_crt, etc.
• [x] Figure out how to expose HTTP and HTTPS ports on cluster correctly
• [x] Ensure all functionality works in link deployment
• [x] Attempt upgrade to latest k8s
• [x] Fix cleanup.sh script
• [x] Review and revise greenlight_link/README.md
• [x] Remove any commented out code in infrastructure

[etavela]

Abandoned attempt to get cleanup.sh working - will just run server setup.sh to redo cluster.