Update standalone agent manifest conditions and scheduler and controllermanager default hosts

[MichaelKatsoulis]

What does this PR do?

After #27691 kubernetes.pod.labels are being populated under kubernetes.labels. The standalone agent manifest conditions have to be updated.
As part of this PR also the default hosts for controllermanager and scheduler are updated with the secure ports.

Why is it important?

Without this PR the conditions in the kubernetes autodiscover provider don't match any pod so the scheduler and controllermanager data streams do not work.

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.

[mergify]

This pull request does not have a backport label. Could you fix it @MichaelKatsoulis? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-v./d./d./d is the label to automatically backport to the 7./d branch. /d is the digit

NOTE: backport-skip has been added to this pull request.

[elasticmachine]

Pinging @elastic/integrations (Team:Integrations)

[elasticmachine]

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Build stats

• Start Time: 2021-11-02T13:28:58.488+0000

• Duration: 83 min 21 sec

• Commit: f156186

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Test	Results
Failed	0
Passed	3
Skipped	0
Total	3

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[ChrsMark]

LGTM, just add a changelog entry and should be ready to merge.

[mergify]

This pull request is now in conflicts. Could you fix it? 🙏
To fixup this pull request, you can check out it locally. See documentation: https://help.github.com/articles/checking-out-pull-requests-locally/

git fetch upstream
git checkout -b update-stadanalone-agent-manifest-conditions upstream/update-stadanalone-agent-manifest-conditions
git merge upstream/master
git push upstream update-stadanalone-agent-manifest-conditions