[cisco_ftd] Add rule, device and host ECS fields

[LaZyDK]

What does this PR do?

Adds test data for Cisco ISE pxGrid Endpoint Profile data.
Adds rule, host and device ECS fields.
Removes empty fields.

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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Build stats

• Start Time: 2023-05-30T10:52:20.812+0000

• Duration: 17 min 41 sec

Test stats 🧪

Test	Results
Failed	0
Passed	21
Skipped	0
Total	21

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[elasticmachine]

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

[kcreddy]

/test

[elasticmachine]

🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (1/1)	💚
Files	100.0% (1/1)	💚 2.958
Classes	100.0% (1/1)	💚 2.958
Methods	100.0% (22/22)	💚 8.081
Lines	70.469% (1396/1981)	👎 -21.586
Conditionals	100.0% (0/0)	💚

[efd6]

/test

[efd6]

/test

[efd6]

Thanks

[elasticmachine]

Package cisco_ftd - 2.11.0 containing this change is available at https://epr.elastic.co/search?package=cisco_ftd