Reduce argocd sync polling interval to reduce wait time

[corneliusroemer]

Currently we need to wait 180s for argocd to sync changes, this makes us have to wait 3min for every change. It's easy to reduce it to say 30s:

How often does Argo CD check for changes to my Git or Helm repository ?¶
The default polling interval is 3 minutes (180 seconds). You can change the setting by updating the timeout.reconciliation value in the argocd-cm config map. If there are any Git changes, ArgoCD will only update applications with the auto-sync setting enabled. If you set it to 0 then Argo CD will stop polling Git repositories automatically and you can only use alternative methods such as webhooks and/or manual syncs for deploying applications.

https://argo-cd.readthedocs.io/en/release-2.5/faq/#how-often-does-argo-cd-check-for-changes-to-my-git-or-helm-repository