Re(#829) WHATWG url path gets removed from request

[daniel-edwards-iress]

Describe the bug
#829 not fully fixed
When making a request using a WHATWG URL object (node URL) dd-trace clears the request path from the URL.

The latest Got converts urls before making the request.

Simple Example

{
  "name": "test",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
    "dd-trace": "^0.17.0"
  }
}

const assert = require('assert');
require('dd-trace').default.init({
  service: 'test',
  runtimeMetrics: true,
  env: 'test',
  logger: {
    debug: console.log,
    error: console.error,
  },
  analytics: true,
  logInjection: false,
});
const url = 'https://postman-echo.com/get?test=123';

const incorrect = new Promise((resolve, reject) => {
  let response = '';

  require('https')
    .request(new URL(url), res => {
      res.on('data', d => (response += d));
      res.on('error', reject);
      res.on('end', () => resolve(response));
    })
    .end();
});

const correct = new Promise((resolve, reject) => {
  let response = '';

  require('https')
    .request(url, res => {
      res.on('data', d => (response += d));
      res.on('error', reject);
      res.on('end', () => resolve(response));
    })
    .end();
});

Promise.allSettled([correct, incorrect]).then(results => {
  assert(results.every(v => v.status === 'fulfilled'));
  assert(results[0] === results[1]);
});

Environment

• docker node:12
• node 12.14.1
• dd-trace 0.17.0