deployment for web app service in terraform has params from bicep

[blgorman]

https://github.com/AzureCloudWorkshops/ACW-InfrastructureAsCode/blob/main/Part2-BuildingTheInfrastructure_terraform.md#step-3---deploy-1

It looks like the final deploy needs to be modified to put the parameters in the terraform.tfvars file instead of add the missing parameters to the top of the file