juniper_*,m365_defender,microsoft_defender_endpoint,mimecast,modsecurity: remove duplicate fields

[efd6]

What does this PR do?

This removes duplicate field definitions from juniper_junos, juniper_netscreen, juniper_srx, m365_defender, microsoft_defender_endpoint, mimecast and modsecurity.

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: multiple packages with duplicated field definitions #4398

Screenshots

[elasticmachine]

🚀 Benchmarks report

Package microsoft_defender_endpoint 👍(0) 💚(0) 💔(1)

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Data stream	Previous EPS	New EPS	Diff (%)	Result
log	2754.82	1890.36	-864.46 (-31.38%)	💔

To see the full report comment with /test benchmark fullreport

[elasticmachine]

💚 Build Succeeded

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Build stats

• Start Time: 2022-11-10T03:38:33.206+0000

• Duration: 20 min 55 sec

Test stats 🧪

Test	Results
Failed	0
Passed	123
Skipped	0
Total	123

🤖 GitHub comments

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[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (15/15)	💚
Files	100.0% (23/23)	💚 2.083
Classes	100.0% (23/23)	💚 2.083
Methods	94.118% (240/255)	👍 2.815
Lines	84.802% (5641/6652)	👎 -5.894
Conditionals	100.0% (0/0)	💚

[elasticmachine]

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

[kcreddy]

LGTM

[elasticmachine]

Package juniper_junos - 0.5.1 containing this change is available at https://epr.elastic.co/search?package=juniper_junos

[elasticmachine]

Package juniper_netscreen - 0.5.1 containing this change is available at https://epr.elastic.co/search?package=juniper_netscreen

[elasticmachine]

Package juniper_srx - 1.6.1 containing this change is available at https://epr.elastic.co/search?package=juniper_srx

[elasticmachine]

Package m365_defender - 1.4.1 containing this change is available at https://epr.elastic.co/search?package=m365_defender

[elasticmachine]

Package microsoft_defender_endpoint - 2.5.1 containing this change is available at https://epr.elastic.co/search?package=microsoft_defender_endpoint

[elasticmachine]

Package mimecast - 1.4.1 containing this change is available at https://epr.elastic.co/search?package=mimecast

[elasticmachine]

Package modsecurity - 1.4.1 containing this change is available at https://epr.elastic.co/search?package=modsecurity