Corrected all details related to the 'configFile' parameter. The current documents refer to a .JSON file which does not exist, the script expects a .YAML file (conf_local.yaml' or 'conf_cloud.yaml). 

Corrected the examples to refer to the 'conf_local.yaml' or 'conf_cloud.yaml' files included in this repo.

Updated load tests

Added Payment.api to healthcheck

Non-preview parameters specified

or namespace name 'Models' does not exist in the namespace 'Identity.API' (are you missing an assembly reference?)

"Starting with .NET Core 2.0 SDK, dotnet restore runs implicitily when you run dotnet build." (C) https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-build?tabs=netcore2x