## Summary

Related to elastic#192484. This PR adding [new content package types and
schemas](elastic/package-spec#777) so that
content packages can be returned correctly from EPR to unblock
development of those packages.

The only current content package is `kubernetes_otel`. You will need to
bump up the max allowed spec version and search with beta (prerelease)
packages enabled to find it:
```
xpack.fleet.internal.registry.spec.max: '3.4'
```

Tests will come with the rest of work for elastic#192484

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
(cherry picked from commit bd6533f)

# Conflicts:
#	oas_docs/bundle.json
#	oas_docs/bundle.serverless.json
#	oas_docs/output/kibana.serverless.staging.yaml
#	oas_docs/output/kibana.serverless.yaml
#	oas_docs/output/kibana.staging.yaml
#	oas_docs/output/kibana.yaml
#	x-pack/plugins/fleet/server/types/rest_spec/epm.ts

…195690)

# Backport

This will backport the following commits from `main` to `8.x`:
- [[UII] Add types to return content packages correctly
(#195505)](#195505)

Note that this includes manual changes to openapi spec files. This
change is not present on the original PR as the main branch no longer
uses openapi spec files.

<!--- Backport version: 8.9.8 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Jen
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Add types to return content packages correctly (#195505)\n\n##
Summary\r\n\r\nRelated to #192484. This PR adding [new content package
types and\r\nschemas](elastic/package-spec#777)
so that\r\ncontent packages can be returned correctly from EPR to
unblock\r\ndevelopment of those packages.\r\n\r\nThe only current
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Add types to return content packages correctly (#195505)\n\n##
Summary\r\n\r\nRelated to #192484. This PR adding [new content package
types and\r\nschemas](elastic/package-spec#777)
so that\r\ncontent packages can be returned correctly from EPR to
unblock\r\ndevelopment of those packages.\r\n\r\nThe only current
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Add types to return content packages correctly (#195505)\n\n##
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so that\r\ncontent packages can be returned correctly from EPR to
unblock\r\ndevelopment of those packages.\r\n\r\nThe only current
content package is `kubernetes_otel`. You will need to\r\nbump up the
max allowed spec version and search with beta (prerelease)\r\npackages
enabled to find it:\r\n```\r\nxpack.fleet.internal.registry.spec.max:
'3.4'\r\n```\r\n\r\nTests will come with the rest of work for
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BACKPORT-->

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>