[8.5](backport #1867) Change local fleet-server connection to localhost:8221

[mergify]

This is an automatic backport of pull request #1867 done by Mergify.
Cherry-pick of 8c7537b has failed:

On branch mergify/bp/8.5/pr-1867
Your branch is up to date with 'origin/8.5'.

You are currently cherry-picking commit 8c7537bd4a.
  (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:
	new file:   changelog/fragments/1669929902-fix-local-fleet-server-port.yaml
	modified:   internal/pkg/remote/client.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   internal/pkg/agent/cmd/enroll_cmd.go

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

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[elasticmachine]

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• Start Time: 2022-12-08T17:21:20.186+0000

• Duration: 13 min 34 sec

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[michel-laterman]

8.5.3 is expected to be the final 8.5 release and this is too late to go in