* Add generateIdTokenUrl as an env var
* Add generateIdTokenUrl to env vars
* Add name and runner_group to context
* No longer add runner-group
* Update runner name if needed
* Get interface instead of concrete class
* Check for nulls on ReservedAgent
* Avoid loading setting file unnecesseraly
* Only check agentName once
* Use Trace.Error when can't update settings
* Better equals and exception handling
* Update JobDispatcher.cs
* Add tests and null check