Rearrange use case enumeration

Closes #72 (closed)

Places where enumerations has to be changed:

• benchmark/application projects
• benchmark/load generator projects
• Kubernetes resource definitions
  • Nothing to do
• Theodolite Execution (Python) special handling of UC2 -> UC4
• Perhaps Theodolite Analysis special handling of UC2 -> UC4
  • Nothing to do
• Docker Compose test deployments