BED-4868 Wrong Reader Count for AZKeyVaults

[AD7ZJ]

Description

Added a field countLabel to the data returned by the endpoint in content.ts This can then be picked up by the EntityInfoDataTable so it can use the correct count for parent objects where needed.

Motivation and Context

This PR addresses: https://specterops.atlassian.net/browse/BED-4868

How Has This Been Tested?

Import the azure example data. Search for 'keyvault' in the explorer and select PHANTOMKEYVAULT-01. The key readers dialog should show 2, not 8.

I have also added a test to EntityInfoDataTable.test.tsx

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have met the contributing prerequisites
  • Assigned myself to this PR
  • Added the appropriate labels
  • Associated an issue: Issues and Pull Requests README #672
  • Read the Contributing guide: https://github.com/SpecterOps/BloodHound/wiki/Contributing
• I have ensured that related documentation is up-to-date
  • Open API docs
  • Code comments (GoDocs / JSDocs)
• I have followed proper test practices
  • Added/updated tests to cover my changes
  • All new and existing tests passed