m*: ensure event.kind is correctly set for pipeline errors

[efd6]

What does this PR do?

Modify m365_defender, mattermost, microsoft_defender_endpoint, microsoft_dhcp, microsoft_exchange_online_message_trace and mysql_enterprise to correctly set event.kind for pipeline errors and ensure error.message is an array.

modsecurity is omitted as there is a pending PR to fix ingest in that package.

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

• [ ]

How to test this PR locally

Related issues

• For sei: ensure packages set error.kind to "pipeline_error" in on_failure processor #6582

Screenshots

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• Start Time: 2023-06-22T02:07:50.633+0000

• Duration: 15 min 54 sec

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Test	Results
Failed	0
Passed	56
Skipped	0
Total	56

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (8/8)	💚
Files	100.0% (14/14)	💚 77.778
Classes	100.0% (14/14)	💚 77.778
Methods	93.293% (153/164)	👍 59.959
Lines	92.213% (6371/6909)	👍 69.206
Conditionals	100.0% (0/0)	💚

[elasticmachine]

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

[bhapas]

LGTM

[elasticmachine]

Package m365_defender - 1.11.0 containing this change is available at https://epr.elastic.co/search?package=m365_defender

[elasticmachine]

Package mattermost - 1.10.0 containing this change is available at https://epr.elastic.co/search?package=mattermost

[elasticmachine]

Package microsoft_defender_endpoint - 2.13.0 containing this change is available at https://epr.elastic.co/search?package=microsoft_defender_endpoint

[elasticmachine]

Package microsoft_dhcp - 1.14.0 containing this change is available at https://epr.elastic.co/search?package=microsoft_dhcp

[elasticmachine]

Package microsoft_exchange_online_message_trace - 1.5.0 containing this change is available at https://epr.elastic.co/search?package=microsoft_exchange_online_message_trace

[elasticmachine]

Package mysql_enterprise - 1.7.0 containing this change is available at https://epr.elastic.co/search?package=mysql_enterprise