add metadata as field in config

metadata currently is in mix with name and metrics, I'd like to have it as a separate field as below

tests :
  - name : aws-small-scale-cluster-density-v2
    metadata:
      platform: AWS
      masterNodesType: m6a.xlarge
      masterNodesCount: 3
      workerNodesType: m6a.xlarge
      workerNodesCount: 24
      benchmark: cluster-density-v2
      ocpVersion: 4.15
      networkType: OVNKubernetes
    # encrypted: true
    # fips: false
    # ipsec: false

    metrics : 
    - name:  podReadyLatency
      metricName: podLatencyQuantilesMeasurement
      quantileName: Ready
      metric_of_interest: P99
      not: 
      - jobConfig.name: "garbage-collection"

    - name:  apiserverCPU
      metricName : containerCPU
      labels.namespace: openshift-kube-apiserver
      metric_of_interest: value
      agg:
        value: cpu
        agg_type: avg

    - name:  ovnCPU
      metricName : containerCPU
      labels.namespace: openshift-ovn-kubernetes
      metric_of_interest: value
      agg:
        value: cpu
        agg_type: avg

    - name:  etcdCPU
      metricName : containerCPU
      labels.namespace: openshift-etcd
      metric_of_interest: value
      agg:
        value: cpu
        agg_type: avg

    - name:  etcdDisck
      metricName : 99thEtcdDiskBackendCommitDurationSeconds
      metric_of_interest: value
      agg:
        value: duration
        agg_type: avg

cloud-bulldozer / orion

add metadata as field in config #16