[o365] New field detected: FileSizeBytes

[nicpenning]

An unknown field of o365.audit.FileSizeBytes was found in my logs when trying to reindex some conflict field indices into a new index.

Sadly, M$ does not appear to have these fields documented in their schema here: https://learn.microsoft.com/en-us/office/office-365-management-api/office-365-management-activity-api-schema

Furthermoore, it is much to difficult to get a raw event so I don't have a sample. Perhaps someone else out there can share a o365 Audit document from the SharePointFileOperation in event.code.

• Enhancement

What does this PR do?

Add new FileSizeBytes field to make sure it is properly mapped.

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.

[elasticmachine]

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• Start Time: 2023-04-18T00:24:00.095+0000

• Duration: 14 min 45 sec

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Passed	24
Skipped	0
Total	24

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[elasticmachine]

Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

[efd6]

/test

[efd6]

Need to regenerate docs.

[2023-04-17T04:50:38.292Z] README.md is outdated. Rebuild the package with 'elastic-package build'
[2023-04-17T04:50:38.292Z] --- want
[2023-04-17T04:50:38.292Z] +++ got
[2023-04-17T04:50:38.292Z] @@ -250,2 +250,3 @@
[2023-04-17T04:50:38.292Z]  | o365.audit.ExternalAccess |  | boolean |
[2023-04-17T04:50:38.292Z] +| o365.audit.FileSizeBytes |  | long |
[2023-04-17T04:50:38.292Z]  | o365.audit.GroupName |  | keyword |
[2023-04-17T04:50:38.292Z] Error: checking package failed: checking readme files are up-to-date failed: files do not match

[nicpenning]

Made a quick update, will that work?

[efd6]

/test

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (1/1)	💚
Classes	100.0% (1/1)	💚
Methods	100.0% (16/16)	💚 8.475
Lines	82.155% (732/891)	👎 -8.644
Conditionals	100.0% (0/0)	💚

[efd6]

Thanks

[elasticmachine]

Package o365 - 1.14.1 containing this change is available at https://epr.elastic.co/search?package=o365