Fix config-reloader process exiting on startup when no domains existed.
Fix config-reloader process exiting on startup when no domains existed.

apinf/api-umbrella,NREL/api-umbrella,OdiloOrg/api-umbrella-router,OdiloOrg/api-umbrella-router,apinf/api-umbrella,apinf/api-umbrella,apinf/api-umbrella,apinf/api-umbrella,NREL/api-umbrella-router,NREL/api-umbrella,NREL/api-umbrella-router,NREL/api-umbrella-router,NREL/api-umbrella,OdiloOrg/api-umbrella-router,NREL/api-umbrella