Add a new 'version' global attribute to all netCDF stream output files

The value of the attribute is taken from the domain % core % modelVersion
variable, which ultimately comes from the version attribute in a core's
Registry.xml file.

Author: barlage

src/driver/mpas_subdriver.F

@@ -512,6 +512,7 @@ subroutine add_stream_attributes(domain)
      
       call MPAS_stream_mgr_add_att(domain % streamManager, 'model_name', domain % core % modelName)
       call MPAS_stream_mgr_add_att(domain % streamManager, 'core_name', domain % core % coreName)
+      call MPAS_stream_mgr_add_att(domain % streamManager, 'version', domain % core % modelVersion)
       call MPAS_stream_mgr_add_att(domain % streamManager, 'source', domain % core % source)
       call MPAS_stream_mgr_add_att(domain % streamManager, 'Conventions', domain % core % Conventions)
       call MPAS_stream_mgr_add_att(domain % streamManager, 'git_version', domain % core % git_version)