Reduce logging verbosity

[calebAtIspot]

The argocd application controller by default is very verbose. Verbosity can definitely be a good thing when it comes to debugging, but log lines do cost money and there is an ideal noise/signal ratio that is balanced in favor of signal. In a single minute we had ~300 log lines due to the multiple logs coming in for every refresh of app status. In the last 15 minutes there's over 2000 log lines.

Personally, this is too much logs for a INFO level and I would suggest setting it to DEBUG

The workaround, of course, is for the user to filter out undesired logs or raise the logging level.

Each app refresh (which is frequent) looks like so:

Refreshing app status (controller refresh requested), level (1)
Comparing app state (cluster: https://kubernetes.default.svc, namespace: argocd)
GetRepoObjs stats
Skipping auto-sync: application status is Synced
No status changes. Skipping patch
Reconciliation completed