CLI-3464 - Support certificate path and key path for schema registry on-prem mtls

[tmalik (tmalikconfluent)]

Release Notes

Breaking Changes

• PLACEHOLDER

New Features

• PLACEHOLDER

Bug Fixes

• PLACEHOLDER

Checklist

• I have successfully built and used a custom CLI binary, without linter issues from this PR.
• I have clearly specified in the What section below whether this PR applies to Confluent Cloud, Confluent Platform, or both.
• I have verified this PR in Confluent Cloud pre-prod or production environment, if applicable.
• I have verified this PR in Confluent Platform on-premises environment, if applicable.
• I have attached manual CLI verification results or screenshots in the Test & Review section below.
• I have added appropriate CLI integration or unit tests for any new or updated commands and functionality.
• I confirm that this PR introduces no breaking changes or backward compatibility issues.
• I have indicated the potential customer impact if something goes wrong in the Blast Radius section below.
• I have put checkmarks below confirming that the feature associated with this PR is enabled in:
  • Confluent Cloud prod
  • Confluent Cloud stag
  • Confluent Platform
  • Check this box if the feature is enabled for certain organizations only

What

Add new certificate path and key path flags to on prem schema registry commands.

Blast Radius

All on-prem Schema registry users

References

https://confluentinc.atlassian.net/browse/CLI-3464

Test & Review

https://docs.google.com/document/d/1LgE3J2dDlT2j1RmqJuQ-8nrP7JXfsoXbACa69Ibp9tg/edit?tab=t.0#heading=h.bslusk494puj

[confluent-cla-assistant]

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