Don't retrieve the default service name if the -k run arg is given.

  Don't retrieve the default service name if the -k run arg is given.
  -k run represents running 'in a console', and is the default if no
  -k option is given at all.

  Perhaps we want to assume -k start as the default (meaning a console
  user in the future would have to explicitly ask for -k run if they
  want to test as a console) now that services are far more stable.
  That can be debated as a seperate patch.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@90285 13f79535-47bb-0310-9956-ffa450edef68