[9.1](backport #46779) [fbreceiver] partial fix for global paths

[mergify]

Proposed commit message

** For filebeatreceiver only **

Add a unique per filebeat receiver path variable. All other beats will use the global paths.Paths provided by elastic-agent-libs/paths

This is necessary for each filebeat receiver to have it's own registry in a separate directory.

This is not a complete fix for #44903 . The following paths still need to migrated to use the unique per beat path variable.

• auditbeat/datastore/datastore.go
• filebeat/autodiscover/builder/hints/logs.go
• filebeat/cmd/generate.go
• libbeat/processors/cache/cache.go
• libbeat/processors/cache/file_store.go
• libbeat/processors/script/javascript/javascript.go
• libbeat/publisher/queue/diskqueue/config.go
• metricbeat/beater/metricbeat.go
• winlogbeat/beater/winlogbeat.go
• x-pack/libbeat/persistentcache/persistentcache.go
• x-pack/metricbeat/module/openai/usage/usage.go

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Disruptive User Impact

Author's Checklist

• [ ]

How to test this PR locally

Unit Test

cd x-pack/filebeat/fbreceiver
go test . -run TestMultipleReceivers -count 1

By hand

1. Build elastic-agent with this PR for beats dependency
2. configure multiple filebeat receivers with different path.home
3. restart multiple times
4. verify that each filebeat receiver has it's own registry

Related issues

• Relates [beatreceiver] global paths definition #44903

Use cases

Screenshots

Logs

---

This is an automatic backport of pull request #46779 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of e55e0be has failed:

On branch mergify/bp/9.1/pr-46779
Your branch is up to date with 'origin/9.1'.

You are currently cherry-picking commit e55e0bedd.
  (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:   filebeat/autodiscover/builder/hints/logs.go
	modified:   filebeat/beater/crawler.go
	modified:   filebeat/beater/store.go
	modified:   filebeat/fileset/config.go
	modified:   filebeat/fileset/factory.go
	modified:   filebeat/fileset/fileset.go
	modified:   filebeat/fileset/fileset_test.go
	modified:   filebeat/fileset/modules.go
	modified:   filebeat/fileset/modules_integration_test.go
	modified:   filebeat/fileset/modules_test.go
	modified:   filebeat/fileset/setup.go
	modified:   filebeat/registrar/migrate.go
	modified:   heartbeat/beater/heartbeat.go
	modified:   libbeat/beat/beat.go
	modified:   libbeat/cfgfile/reload.go
	modified:   libbeat/cmd/export/ilm_policy.go
	modified:   libbeat/cmd/export/template.go
	modified:   libbeat/cmd/instance/keystore_fips.go
	modified:   libbeat/cmd/instance/keystore_fips_test.go
	modified:   libbeat/cmd/instance/keystore_nofips.go
	modified:   libbeat/cmd/instance/locks/lock.go
	modified:   libbeat/cmd/instance/locks/lock_test.go
	modified:   libbeat/idxmgmt/client_handler.go
	modified:   libbeat/otelbeat/oteltest/oteltest.go
	modified:   libbeat/template/load.go
	modified:   libbeat/template/load_integration_test.go
	modified:   libbeat/template/load_test.go
	modified:   metricbeat/beater/metricbeat.go
	modified:   x-pack/filebeat/fbreceiver/receiver_test.go
	modified:   x-pack/libbeat/cmd/instance/beat.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   filebeat/beater/diagnostics.go
	both modified:   filebeat/beater/filebeat.go
	both modified:   libbeat/cfgfile/reload_integration_test.go
	both modified:   libbeat/cmd/instance/beat.go

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

[github-actions]

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[elasticmachine]

Pinging @elastic/obs-ds-hosted-services (Team:obs-ds-hosted-services)

[elasticmachine]

Pinging @elastic/elastic-agent-data-plane (Team:Elastic-Agent-Data-Plane)

[mergify]

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

[leehinman]

closing since #46402 did not get backported as well as others that would