feat: add configurable health probes for controller and node components

[vagharsh]

This PR adds configurable probe support for both controller and node components while maintaining backward compatibility.

Changes

• Add configurable livenessProbe, readinessProbe, and startupProbe settings for controller
• Add configurable livenessProbe, readinessProbe, and startupProbe settings for node
• Maintain backward compatibility by using existing hardcoded values as defaults
• Enable optional readiness and startup probes that can be configured independently
• Support all standard Kubernetes probe configuration options

Backward Compatibility

• Existing deployments continue to work without any changes
• Default probe configurations use the same values that were previously hardcoded
• Readiness and startup probes are optional and only enabled when explicitly configured

Testing

• Verified templates render correctly with default values
• Tested with custom probe configurations
• Confirmed backward compatibility with existing values

[k8s-ci-robot]

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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @vagharsh. Thanks for your PR.

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[vagharsh]

hi @dankova22 @justinsb any update ?

[k8s-ci-robot]

PR needs rebase.

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