Show core count on fine print, even if set by a non-JVM args mechanism

[holly-cummins]

Will need a change in the json-generation logic.

[edeandrea]

All this info is there now in the config and env.host elements:

{
  "config": {
    "jvm": {
      "args": "-XX:+UseNUMA",
      "memory": "-Xms512m -Xmx512m",
      "graalvm": {
        "version": "25.0.1-graalce"
      },
      "version": "25.0.1-tem"
    },
    "num_iterations": 1,
    "quarkus": {
      "native_build_options": "",
      "version": "3.30.1"
    },
    "repo": {
      "branch": "spring-3-vs-4",
      "url": "https://github.com/edeandrea/spring-quarkus-perf-comparison"
    },
    "springboot3": {
      "native_build_options": "",
      "version": "3.5.8"
    },
    "springboot4": {
      "native_build_options": "",
      "version": "4.0.0"
    },
    "resources": {
      "cpu": {
        "app": "0-3",
        "1st_request": "10",
        "load_generator": "7-9",
        "db": "4-6"
      },
      "app_cpus": 4
    },
    "profiler": {
      "name": "none",
      "events": "cpu"
    }
  },
  "env": {
    "host": {
      "memory": "62Gi",
      "os": "Fedora Linux 43 (Workstation Edition)",
      "kernel": "6.17.8-300.fc43.x86_64",
      "cpu": "Intel(R) Core(TM) Ultra 7 165H (22 cpus)",
      "type": "LENOVO 21KWS49V00",
      "gpu": "Intel Corporation Meteor Lake-P [Intel Arc Graphics]"
    }
  }
}