[7.17](backport #35184) Remove huaweicloud - revert #27607 (#37828)

* Remove huaweicloud - revert #27607 (#35184)

* Remove huaweicloud - revert #27607

The huaweicloud is just openstack therefore revert #27607 to fix detection of all public and private openstack installations.

* make huawei an alias for openstack

* change doc

* Update CHANGELOG.next.asciidoc

---------

Co-authored-by: kaiyan-sheng <[email protected]>
(cherry picked from commit 07c559b)

# Conflicts:
#	libbeat/processors/add_cloud_metadata/docs/add_cloud_metadata.asciidoc
#	libbeat/processors/add_cloud_metadata/provider_huawei_cloud.go
#	libbeat/processors/add_cloud_metadata/provider_huawei_cloud_test.go
#	libbeat/processors/add_cloud_metadata/providers.go

* Update CHANGELOG.next.asciidoc

* Update add_cloud_metadata.asciidoc

* Update providers.go

* fix doc

* fix lint

---------

Co-authored-by: Maximilian Stinsky <[email protected]>
Co-authored-by: kaiyan-sheng <[email protected]>

Author: 3 people

CHANGELOG.next.asciidoc

@@ -10,6 +10,10 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 
 *Affecting all Beats*
 
+- add_cloud_metadata processor: `huawei` provider is now treated as `openstack`. Huawei cloud runs on OpenStack
+platform, and when viewed from a metadata API standpoint, it is impossible to differentiate it from OpenStack. If you
+know that your deployments run on Huawei Cloud exclusively, and you wish to have `cloud.provider` value as `huawei`,
+you can achieve this by overwriting the value using an `add_fields` processor. {pull}35184[35184]
 
 *Auditbeat*
 

libbeat/processors/add_cloud_metadata/docs/add_cloud_metadata.asciidoc

@@ -20,6 +20,11 @@ The following cloud providers are supported:
 - Azure Virtual Machine
 - Openstack Nova
 
+NOTE: `huawei` is an alias for `openstack`. Huawei cloud runs on OpenStack platform, and when
+viewed from a metadata API standpoint, it is impossible to differentiate it from OpenStack. If you know that your
+deployments run on Huawei Cloud exclusively, and you wish to have `cloud.provider` value as `huawei`, you can achieve
+this by overwriting the value using an `add_fields` processor.
+
 The Alibaba Cloud and Tencent cloud providers are disabled by default, because
 they require to access a remote host. The `providers` setting allows users to
 select a list of default providers to query.
@@ -52,10 +57,9 @@ List of names the `providers` setting supports:
 - "digitalocean" for Digital Ocean (enabled by default).
 - "aws", or "ec2" for Amazon Web Services (enabled by default).
 - "gcp" for Google Copmute Enging (enabled by default).
-- "openstack", or "nova" for Openstack Nova (enabled by default).
+- "openstack", "nova", or "huawei" for Openstack Nova (enabled by default).
 - "openstack-ssl", or "nova-ssl" for Openstack Nova when SSL metadata APIs are enabled (enabled by default).
 - "tencent", or "qcloud" for Tencent Cloud (disabled by default).
-- "huawei" for Huawei Cloud (enabled by default).
 
 The third optional configuration setting is `overwrite`. When `overwrite` is
 `true`, `add_cloud_metadata` overwrites existing `cloud.*` fields (`false` by
@@ -126,20 +130,6 @@ _Tencent Cloud_
 }
 -------------------------------------------------------------------------------
 
-_Huawei Cloud_
-
-[source,json]
--------------------------------------------------------------------------------
-{
-  "cloud": {
-    "availability_zone": "cn-east-2b",
-    "instance.id": "37da9890-8289-4c58-ba34-a8271c4a8216",
-    "provider": "huawei",
-    "region": "cn-east-2"
-  }
-}
--------------------------------------------------------------------------------
-
 _Alibaba Cloud_
 
 This metadata is only available when VPC is selected as the network type of the

libbeat/processors/add_cloud_metadata/provider_huawei_cloud.go

@@ -19,12 +19,11 @@ package add_cloud_metadata
 
 import (
 	"context"
+	"fmt"
 	"net"
 	"net/http"
 	"time"
 
-	"github.com/pkg/errors"
-
 	"github.com/elastic/beats/v7/libbeat/common"
 )
 
@@ -64,7 +63,7 @@ var cloudMetaProviders = map[string]provider{
 	"nova-ssl":      openstackNovaSSLMetadataFetcher,
 	"qcloud":        qcloudMetadataFetcher,
 	"tencent":       qcloudMetadataFetcher,
-	"huawei":        huaweiMetadataFetcher,
+	"huawei":        openstackNovaMetadataFetcher,
 }
 
 func selectProviders(configList providerList, providers map[string]provider) map[string]provider {
@@ -113,7 +112,7 @@ func setupFetchers(providers map[string]provider, c *common.Config) ([]metadataF
 
 		fetcher, err := ff.Create(name, c)
 		if err != nil {
-			return nil, errors.Wrapf(err, "failed to initialize the %v fetcher", name)
+			return nil, fmt.Errorf("failed to initialize the %v fetcher: %w", name, err)
 		}
 
 		mf = append(mf, fetcher)