Huge increase in default log verbosity with AGIC 1.7.5

[bondido]

After updating AGIC on AKS from version 1.7.4 to 1.7.5 we've noticed huge spike in log size from ingress-azure container.
As we are sending AKS container logs to Log Analytics, the change also implied increased costs.

I've found the commit: 91c71a1
that moved some logs from verbosity level 5 to 3.

As I can see, '3' is default value if we don't override it with helm chart installation variables.

What's more. I think the docs are wrongly stating that the default verbosity level is '1'.
https://azure.github.io/application-gateway-kubernetes-ingress/logging-levels/

To Reproduce
Update AGIC version 1.7.4 -> 1.7.5 with default value of verbosityLevel variable