When a service connects to postgres, the connection string should be updated to included the ApplicationName so that we can more easily determine where usage is coming from in the monitoring console. 

ApplicationName prameter listed in https://jdbc.postgresql.org/documentation/use/

See Also: https://stackoverflow.com/questions/19224934/how-to-set-application-name-in-a-postgresql-jdbc-url

Done Critera

• Each service (swatch-billable-usage, swatch-contracts, etc.) specifies it's name on the ApplicationName parameter of the connection string for postgres. 
• This can be validated querying connections in postgres directly & via the RDS performance insights console for queries made. 
• ApplicationName is set for both Quarkus & Spring based services