Provide common system values as variables

[visola]

User Story

As a user I want to be able to use common environment variables in my endpoints.

Acceptance Criteria

• [ ] The following variables are available:
  • [ ] user home directory
  • [ ] upstream name
  • [ ] file where it was loaded from
  • [ ] directory where it was loaded from
  • [ ] listener port
  • [ ] listener name