deployment: add liveness probe to hybrid environment overlays

[nimrod-starkware]

Cross-repo PR: https://github.com/starkware-industries/sequencer-devops/pull/717

Cross-repo PR: https://github.com/starkware-industries/sequencer-devops/pull/717

[reviewable-StarkWare]

This change is 

[nimrod-starkware]

• deployment: add gcp pod monitoring to hybrid environment overlays #14192 : 2 dependent PRs (#14196 , #14242 )
• deployment: add liveness probe to hybrid environment overlays #14191 👈 (View in Graphite)
• deployment: add readiness probe to hybrid environment overlays #14190
• deployment: add startup probe to hybrid environment overlays #14188
• deployment: add monitoring endpoint port to hybrid environment overlays #14187
• main-v0.14.3

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[cursor]

PR Summary

Medium Risk
Liveness on production hybrid sequencer environments can restart pods after probe failures; mis-tuned thresholds or a flaky /monitoring/alive endpoint could cause unnecessary restarts during incidents.

Overview
Enables Kubernetes liveness probes on hybrid sequencer deployments for mainnet, sepolia-alpha, and sepolia-integration by adding the same livenessProbe block to each environment’s common.yaml overlay.

Each overlay now probes /monitoring/alive (matching startup) with a 10s period, 5 consecutive failures before restart, and a 3s timeout. Readiness and startup probe settings in those files are unchanged.

This turns on automatic pod restart when the process stops responding on the monitoring port, whereas previously only startup/readiness were configured in these three overlays.

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[dorimedini-starkware]

@dorimedini-starkware reviewed 3 files and all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on idan-starkware and matanl-starkware).

[dorimedini-starkware]

@dorimedini-starkware reviewed 3 files and all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on idan-starkware and matanl-starkware).

[graphite-app]

Merge activity

• May 28, 11:20 AM UTC: Graphite rebased this pull request, because this pull request is set to merge when ready.

[dorimedini-starkware]

Reviewable status: complete! all files reviewed, all discussions resolved (waiting on idan-starkware and matanl-starkware).