New Visual Builder feature is not working well with authentication

[amitripshtos]

Kibana version:
5.4.0
Elasticsearch version:
5.4.0
Server OS version:
fedora 25
Browser version:
chrome 58
Browser OS version:

Original install method (e.g. download page, yum, from source, etc.):
docker image from docker hub
Description of the problem including expected versus actual behavior:
My kibana is protected by a nginx proxy (using basic authentication)
When I go into the Visual Builder, even for "*" index I get empty results for everything, and the network responses are:

---

https:/elastic:5601/api/metrics/vis/data

Request Payload
view source
{timerange: {min: "2017-05-05T04:00:00.000Z", max: "2017-05-06T03:59:59.999Z"},…}
filters : [{bool: {must: [{query_string: {query: "*"}}], must_not: []}}]
panels : [{id: "29c4d9c0-3301-11e7-b6a6-adae3e743956", type: "timeseries",…}]
timerange: {min: "2017-05-05T04:00:00.000Z", max: "2017-05-06T03:59:59.999Z"}

Response
29c4d9c0-3301-11e7-b6a6-adae3e743956: {id: "29c4d9c0-3301-11e7-b6a6-adae3e743956", statusCode: 401,…}
error:
"↵↵<title>401 Unauthorized</title>↵↵

Unauthorized

↵

This server could not verify that you↵are authorized to access the document↵requested. Either you supplied the wrong↵credentials (e.g., bad password), or your↵browser doesn't understand how to supply↵the credentials required.

↵↵"
id: "29c4d9c0-3301-11e7-b6a6-adae3e743956"
series : []
statusCode : 401

https://elastic:5601/api/metrics/fields?index=*

Response is: []

Steps to reproduce:

1. Create elasticsearch and kibana and add proxy with authentication for the elasticsearch server
2. Go into visual builder
3. See that it does not work

Thanks guys :)

[simianhacker]

I have a fix for this, I'll be submitting a PR at the end of the day.

[amitripshtos]

Tnx guys <3