Investigate usage of legacy client

[DarshitChanpura]

Security-dashboards plugin code still uses a legacy cluster client when setting up Security-client to make calls to security plugin. This has been replaced by a newer version cluster client.

The request is to investigate whether references to legacy client can be replaced with the newer version. If the result is No, the issue can be marked as closed with appropriate reasoning. If the result is Yes, a follow-up issue should be created to replace the client in a modular manner.

[stephen-crawford]

[Triage] Hi @DarshitChanpura thank you for filing this issue and clearly listing the closure criteria. We can go ahead and mark this as triaged based on this info.