Elasticsearch instrumentation breaks returned promise

[watson]

In the elasticsearch module instrumentation, any request can return a promise, eg:

client.ping().then(() => {
  console.log('ping successful')
})

The returned promise has an extra function not normally on promises: abort(). The abort function is used to abort the request to Elasticsearch. As part of the instrumentation, this agent returns a different promise which doesn't have the expected abort() function. This, in turn, causes errors like elastic/kibana#52617.