Elasticsearch rule builder broken / Elasticsearch聚合规则构造错误

[stevapple]

夜莺后端支持使用 ES 聚合规则，但是当数值提取策略设置为聚合类型（即不为 count）时，前端所示的 Field key 字段未与 value.field 产生双向关联，即：

1. 当后端返回的规则设置了 value.field 时，前端无法正确将其显示在输入框中；
2. 在前端输入框输入了目标值后，无法将其正确传给后端，亦无法使用“数据预览”。

Related: ccfos/nightingale#2547

示例规则：

[
  {
    "cate": "elasticsearch",
    "name": "系统内存用量大于10%",
    "note": "触发值：{{.TriggerValue}} 主机：{{index $labels \"host.name\"}}",
    "prod": "logging",
    "algorithm": "",
    "algo_params": null,
    "delay": 0,
    "severity": 0,
    "severities": [
      2
    ],
    "disabled": 0,
    "prom_for_duration": 60,
    "prom_ql": "",
    "rule_config": {
      "anomaly_trigger": {
        "algo_params": {
          "lower_bound": 1,
          "lower_times_num": 1,
          "seasonal_duration": 86400,
          "upper_bound": 1,
          "upper_times_num": 1
        },
        "severity": 2
      },
      "exp_trigger_disable": false,
      "nodata_trigger": {
        "enable": false,
        "resolve_after": 1800,
        "resolve_after_enable": false,
        "severity": 2
      },
      "queries": [
        {
          "date_field": "@timestamp",
          "group_by": [
            {
              "cate": "terms",
              "field": "host.name",
              "params": [
                {
                  "alias": "",
                  "query": ""
                }
              ]
            }
          ],
          "index": ".ds-metrics-system.memory-server-*",
          "index_type": "index",
          "interval": 300,
          "keys": {
            "labelKey": "",
            "metricKey": "",
            "valueKey": ""
          },
          "prom_ql": "",
          "ref": "A",
          "severity": 2,
          "unit": "percentUnit",
          "value": {
            "field": "system.memory.used.pct",
            "func": "avg"
          }
        }
      ],
      "triggers": [
        {
          "exp": "$A > 0.1",
          "expressions": [
            {
              "comparisonOperator": ">",
              "logicalOperator": "&&",
              "ref": "A",
              "value": 0.1
            }
          ],
          "join_ref": "A",
          "mode": 0,
          "recover_config": {
            "judge_type": 1
          },
          "severity": 2
        }
      ]
    },
    "event_relabel_config": null,
    "prom_eval_interval": 15,
    "enable_stime": "00:00",
    "enable_stimes": [
      "00:00"
    ],
    "enable_etime": "00:00",
    "enable_etimes": [
      "00:00"
    ],
    "enable_days_of_week": [
      "0",
      "1",
      "2",
      "3",
      "4",
      "5",
      "6"
    ],
    "enable_days_of_weeks": [
      [
        "0",
        "1",
        "2",
        "3",
        "4",
        "5",
        "6"
      ]
    ],
    "enable_in_bg": 0,
    "notify_recovered": 1,
    "notify_channels": [],
    "notify_repeat_step": 60,
    "notify_max_number": 0,
    "recover_duration": 0,
    "callbacks": [],
    "runbook_url": "",
    "append_tags": [],
    "annotations": {},
    "extra_config": {
      "enrich_queries": []
    },
    "uuid": 0,
    "cur_event_count": 2,
    "update_by_nickname": "超管",
    "cron_pattern": "@every 15s",
    "notify_rule_ids": [],
    "notify_version": 1
  }
]