feat: expose main Devtron deployment probe settings in Helm values

[Copilot]

Description

The devtron-operator chart currently hardcodes liveness/readiness timings for the main Devtron deployment, which makes startup tuning impossible through Helm. This change exposes those probe timings in chart values while preserving existing defaults.

• Chart surface

  • Added components.devtron.livenessProbe
  • Added components.devtron.readinessProbe

• Template wiring

  • Replaced hardcoded probe timing fields in charts/devtron/templates/devtron.yaml
  • Kept the existing /health endpoint, port, and HTTP scheme unchanged

• Docs

  • Added a brief note in the chart README pointing users to the new values

Example:

components:
  devtron:
    livenessProbe:
      initialDelaySeconds: 60
      periodSeconds: 10
      timeoutSeconds: 5
      successThreshold: 1
      failureThreshold: 3
    readinessProbe:
      initialDelaySeconds: 60
      periodSeconds: 10
      timeoutSeconds: 5
      successThreshold: 1
      failureThreshold: 3

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR requires documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have tested it for all user roles.
• I have added all the required unit/api test cases.

Does this PR introduce a user-facing change?

The `devtron-operator` Helm chart now exposes `components.devtron.livenessProbe` and `components.devtron.readinessProbe` for the main Devtron deployment, allowing probe timing overrides without post-install patching.

[bito-code-review]

Bito Review Skipped - No Changes Detected

Bito didn't review this pull request because we did not detect any changes in the pull request to review.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud