feat: Allow replicas property for webapp deployment to not be set at all

[praneetloke]

Is your feature request related to a problem? Please describe.

Hi, I am looking at creating a horizontal pod autoscaler (HPA) for the webapp deployment. But that conflicts with the hard-coded replicaCount setting in the chart, which sets the replicas property in the deployment spec. Kubernetes recommends that the replicas property be unset when using an HPA.

Describe the solution you'd like to see

replicas property of the webapp deployment spec can be disabled for those that don't want to use a static value.

Describe alternate solutions

N/A

Additional information

No response