Allow tuning of proxy liveness/readiness probe timeouts and delays

Allow tuning of proxy liveness/readiness probe timeouts and delays: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). I'm installing Linkerd via the helm chart and ran into an issue on some of our slower nodes: the injected linkerd-proxy sidecar occasionally fails…

The task

I'm installing Linkerd via the helm chart and ran into an issue on some of our slower nodes: the injected `linkerd-proxy` sidecar occasionally fails its liveness/readiness probes during pod startup and we end up in restart loops until things settle.

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.