Add config properties

[mazemaze567]

Add the following properties for appConfig.json .

• site.global.discovery_host
  • For discovery.uri in config.properties
  • default value : {{site.global.coordinator_host}}
• site.global.discovery_port
  • For discovery.uri in config.properties
  • default value : {{site.global.presto_server_port}}
• site.global.node_environment
  • For node.environment in node.properties
  • default value : "test"

[kokosing]

I am very for such a long delay without a review, I somehow simply missed your PR.