Defender for Cloud provisioning cleanup - remove D4C DNS and VM Vulnerability Assessment Provider

[Springstone]

Overview/Summary

Defender for Cloud provisioning cleanup - remove D4C DNS and VM Vulnerability Assessment Provider

Defender for Cloud for DNS is deprecated and replaced by features in Defender for Servers. The vulnerability assessment provider for Qualys is being deprecated, and the default ("mdeTvm") - Microsoft Defender for Endpoint Thread Vulnerability Management is the only option going forward.

This PR fixes/adds/changes/removes

1. Updates to initiatives and assignments

Breaking Changes

1. Breaking for initiative: Deploy-MDFC-Config
2. Breaking for assignment: DINE-MDFCConfigPolicyAssignment

As part of this Pull Request I have

• [X] Checked for duplicate Pull Requests
• [X] Associated it with relevant issues, for tracking and closure.
• [X] Ensured my code/branch is up-to-date with the latest changes in the main branch
• [X] Performed testing and provided evidence.
• [X] Ensured contribution guidance is followed.
• [X] Updated relevant and associated documentation.
• [X] Updated the "What's New?" wiki page (located: /docs/wiki/whats-new.md)