[8.x](backport #2879) Refactor asset inventory

[mergify]

Summary of your changes

• Update Taxonomy
  • Remove sub_category
  • Remove sub_type
  • Change category
  • Change type
• Move from asset to entity
• Move asset.raw to Attributes
• Move asset.tags to labels
• Update fields to follow ecs definition:
  • host
  • user
  • cloud
  • network

Screenshot/Data

Related Issues

• Integration field Mapping https://github.com/elastic/integrations/pull/12220/files
• Closes https://github.com/elastic/security-team/issues/11457
• Closes https://github.com/elastic/security-team/issues/11213

  ---

  This is an automatic backport of pull request Refactor asset inventory #2879 done by Mergify.

[mergify]

Cherry-pick of cbadcb7 has failed:

On branch mergify/bp/8.x/pr-2879
Your branch is up to date with 'origin/8.x'.

You are currently cherry-picking commit cbadcb77.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   internal/inventory/ASSETS.md
	modified:   internal/inventory/asset.go
	modified:   internal/inventory/awsfetcher/fetcher_ec2_instance.go
	modified:   internal/inventory/awsfetcher/fetcher_ec2_instance_test.go
	modified:   internal/inventory/awsfetcher/fetcher_elb.go
	modified:   internal/inventory/awsfetcher/fetcher_elb_test.go
	modified:   internal/inventory/awsfetcher/fetcher_iam_policy.go
	modified:   internal/inventory/awsfetcher/fetcher_iam_policy_test.go
	modified:   internal/inventory/awsfetcher/fetcher_iam_role.go
	modified:   internal/inventory/awsfetcher/fetcher_iam_role_test.go
	modified:   internal/inventory/awsfetcher/fetcher_iam_user.go
	modified:   internal/inventory/awsfetcher/fetcher_iam_user_test.go
	modified:   internal/inventory/awsfetcher/fetcher_lambda_test.go
	modified:   internal/inventory/awsfetcher/fetcher_networking.go
	modified:   internal/inventory/awsfetcher/fetcher_rds.go
	modified:   internal/inventory/awsfetcher/fetcher_rds_test.go
	modified:   internal/inventory/awsfetcher/fetcher_s3_bucket.go
	modified:   internal/inventory/awsfetcher/fetcher_s3_bucket_test.go
	modified:   internal/inventory/awsfetcher/fetcher_sns.go
	modified:   internal/inventory/awsfetcher/fetcher_sns_test.go
	modified:   internal/inventory/azurefetcher/fetcher_account.go
	modified:   internal/inventory/azurefetcher/fetcher_account_test.go
	modified:   internal/inventory/azurefetcher/fetcher_activedirectory.go
	modified:   internal/inventory/azurefetcher/fetcher_activedirectory_test.go
	modified:   internal/inventory/azurefetcher/fetcher_resource_graph.go
	modified:   internal/inventory/azurefetcher/fetcher_resource_graph_test.go
	modified:   internal/inventory/azurefetcher/fetcher_storage.go
	modified:   internal/inventory/azurefetcher/fetcher_storage_test.go
	modified:   internal/inventory/cloud_assets.xlsx
	modified:   internal/inventory/gcpfetcher/fetcher_assets.go
	modified:   internal/inventory/gcpfetcher/fetcher_assets_test.go
	modified:   internal/inventory/inventory.go
	modified:   internal/inventory/inventory_test.go
	modified:   scripts/update_assets_md/main.go
	modified:   tests/commonlib/io_utils.py
	modified:   tests/commonlib/utils.py
	modified:   tests/product/tests/data/asset_inventory_test_case.py
	modified:   tests/product/tests/data/azure_asset_inventory/test_cases.py
	modified:   tests/product/tests/data/gcp_asset_inventory/test_cases.py
	modified:   tests/product/tests/test_aws_asset_inventory.py
	modified:   tests/product/tests/test_gcp_asset_inventory.py

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   internal/inventory/awsfetcher/fetcher_lambda.go
	both modified:   tests/product/tests/data/aws_asset_inventory/test_cases.py
	deleted by us:   tests/product/tests/test_azure_asset_inventory.py

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[mergify]

This pull request has not been merged yet. Could you please review and merge it @romulets? 🙏

[mergify]

This pull request has not been merged yet. Could you please review and merge it @romulets? 🙏

[orouz]

@romulets fixed conflicts with clog (and also internal/inventory/awsfetcher/fetcher_lambda.go:83)

PTAL