Adding Redis proxy configs

[SanduDS]

Purpose

Reusing existing envoy proxy to act as Redis proxy

Issues

Fixes https://github.com/wso2-enterprise/choreo/issues/32097

Automation tests

• Unit tests added: Yes/No
• Integration tests added: Yes/No

Tested environments

Not Tested

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Maintainers: Check before merge

• Assigned 'Type' label
• Assigned the project
• Validated respective github issues
• Assigned milestone to the github issue(s)

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