Enable time series mode for kubernetes pod data stream

[jsoriano]

Don't merge, requires elastic/package-spec#297 or similar.

What does this PR do?

Enables time series mode for kubernetes pod data stream.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

Author's Checklist

• [ ]

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• Start Time: 2022-03-31T08:05:01.937+0000

• Duration: 9 min 56 sec

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• Description: ../../build/elastic-package check -v

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[jsoriano]

Closing as it seems that this is not going to be needed.