[GCP] updating GCP ECS version and adding event.original

[P1llus]

What does this PR do?

Updates package ECS version to 1.10.
Sync module changes to packages if any.
Adds Preserve Raw event functionality if not already exists.
Adds pipeline tests if missing.

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.
• If I'm introducing a new feature, I have modified the Kibana version constraint in my package's manifest.yml file to point to the latest Elastic stack release (e.g. ^7.13.0).

Related issues

• Relates [Meta] 7.14 Planned changes to all packages #994

[elasticmachine]

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Build stats

• Build Cause: Pull request #1045 updated

• Start Time: 2021-06-09T10:49:28.674+0000

• Duration: 23 min 32 sec

• Commit: 6eda6be

Test stats 🧪

Test	Results
Failed	0
Passed	23
Skipped	0
Total	23

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