HELM: Support configuration of ESP wsdlAddress

The wsdl is a contract between SOAP clients and the server about how to interface with services and operations within the service. The wsdl has an embedded service location that documents the address where the client should call the service. Some clients automatically depend on that address to be accurate.

Because the address used by the client is affected by many factors outside the cluster.. the address needs to be configurable.

This change will allow the address to be set for the ESP instance.

For example:
esp:

• name: eclwatch
  application: eclwatch
  auth: none
  replicas: 1
  service:
  servicePort: 8010
  wsdlAddress: clientfacingaddress:8010
  visibility: local