Allow http-add-on operator deployment to set logging verbosity

[Andrew]

Expected Behavior

I can configure logging verbosity on the http-add-on component's operator deployment

Actual Behavior

Logging verbosity is hardcoded

Steps to Reproduce the Problem

1. Observe https://github.com/kedacore/charts/blob/keda-add-ons-http-v0.6.0/http-add-on/templates/operator/deployment.yaml#L29

Specifications

• Helm Chart Version: keda-add-ons-http-v0.6.0