[charts/portal] Race condition - DE620051

[Gazza7205]

Description of the change

2.3.11 General Updates

• Added a preflight check (initContainer) for the core apim/ingress deployment
  • This resolves a race condition that occurs on slower hardware where apim/ingress starts before other dependent services are ready.
  • This is enabled by default. A Helm upgrade will restart the apim deployment.
    • If you wish to disable this, set apim.preflightCheck.enabled to false

    apim:
      ...
      preflightCheck:
        enabled: true
      ...
    

Benefits

• Portal can be successfully deployed on slower or shared hardware.

Drawbacks

• Enabled by default meaning that the APIM container will be restarted on the initial Helm Upgrade.
• There is always a minimum 120 second delay when deploying/replacing the APIM container

Applicable issues

• DE620051

Checklist

• Chart version bumped in Chart.yaml according to semver.
• Variables are documented in the README.md
• Title of the PR starts with chart name (e.g. [charts/gateway])
• If the chart contains a values-production.yaml apart from values.yaml, ensure that you implement the changes in both files

[ksaladi]

LGTM.