'No valid weather file defined in either the osm or osw.' warning

[joseph-robertson]

https://github.com/NREL/OpenStudio-workflow-gem/blob/develop/lib/openstudio/workflow/jobs/run_initialization.rb#L200.

This is thrown even if, for example, you set the weather file using a measure from your osw. Can we change from warn to info or debug, or perhaps throw this warning later in the workflow?