Replace VCAP:::Logging with Steno

[#53895047]
Include request_guid in the Steno logger context

[#53895047]
Include backtrace and types for ServiceError JSON
Clear out steno context after request

[#53895047]
Configure steno context to use FiberLocal storage

[#53895047]
Service auth tokens not used by CatalogManager
Add documentation_url to advertised services