[Ingest-Manager] Fix capabilities resolution in inspect command

[michalpristas]

What does this PR do?

This one was reported by @faec during testing.

When using inspect command type of object is resolved as map[interface{}]interface{} instead of usual map[string]interface{}
This PR allows capabilities handle this type as well.

Why is it important?

Resolve same config in pipeline and inspect

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

[elasticmachine]

Pinging @elastic/ingest-management (Team:Ingest Management)

[elasticmachine]

Pinging @elastic/agent (Team:Agent)

[elasticmachine]

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Build stats

• Build Cause: Pull request #24346 updated

• Start Time: 2021-03-05T15:00:50.894+0000

• Duration: 107 min 9 sec

• Commit: fb80485

Test stats 🧪

Test	Results
Failed	0
Passed	6548
Skipped	16
Total	6564

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Test stats 🧪

Test	Results
Failed	0
Passed	6548
Skipped	16
Total	6564

[blakerouse]

Surprising that it can sometimes be map[interface{}]interface{}. I assume that is because of user misconfiguration?

[michalpristas]

it depends where it's coming from and action or ast it is correct if it's from config it's this way.