Support payload for custom span

[CelianR]

What and why?

Adds an option to provide a payload such that datadog-ci is executed only once for multiple calls.

It will be useful to avoid extra overhead when uploading several custom spans at once.

Here is an example payload sending two spans:

[
    {
        "name": "hello",
        "startTimeInMs": 42,
        "endTimeInMs": 618,
        "tags": ["hello:world", "super:mario"],
        "measures": ["life:42", "hey:618", "ho:1618"]
    },
    {
        "name": "hello2",
        "startTimeInMs": 43,
        "endTimeInMs": 619,
        "tags": ["bonjour:monde", "super:luigi"],
        "measures": ["life:43", "hey:619", "ho:1619"]
    }
]

How?

Mostly refactoring, the payload is a json file containing an array of arguments.

Review checklist

• Feature or bugfix MUST have appropriate tests (unit, integration)

[datadog-datadog-prod-us1]

Datadog Report

Branch report: celian/innovation-week-25-q1-span-payload
Commit report: 6631a95
Test service: datadog-ci-tests

✅ 0 Failed, 387 Passed, 0 Skipped, 1m 17.76s Total duration (1m 5.84s time saved)