Integrate option to toggle between Istio VSs and vanilla ingress

This ticket will provide an option in the chart toggle between Istio virtual services and vanilla ingress.

Definition of Done

• Dig back through the Harness replicated charts and copy the ingress objects into Helm chart where they belong
• Create a top level variable that chooses either istio or vanilla ingress
• Add checks around the istio virtual service object (singular) and the ingress objects (plural) to create them depending on the top level chart variable