support for empty node label

[charanm08]

Description: support for empty node label

Changes Proposed in PR: support for empty node label

Fixes: resolves #Github issue id

General Checklist

• [x] Updated Added functionality/ bug fix in release notes
• [x] Added examples for new feature
• [x] Updated the documentation
• [x] Smoke testing completed

CRD Checklist

• [x] Updated required CR schema