refactored the code for cluster handler

[vklohiya]

Description: Add Issue/Feature description

Changes Proposed in PR:

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

[vklohiya]

/azp run

[azure-pipelines[bot]]

Azure Pipelines successfully started running 1 pipeline(s), but failed to run 1 pipeline(s).

[pmahdev]

LGTM