Update Docker images for Kubernetes files

execution/uc1-application/aggregation-deployment.yaml

execution/uc1-workload-generator/deployment.yaml

execution/uc2-application/aggregation-deployment.yaml

execution/uc2-workload-generator/deployment.yaml

execution/uc3-application/aggregation-deployment.yaml

execution/uc3-workload-generator/deployment.yaml

execution/uc4-application/aggregation-deployment.yaml

execution/uc4-workload-generator/deployment.yaml