Introduce joint MIP lists based on the ec-earth3 configurations, distinguish between mip_name, mip_list and mip_label in order to prepare for joint and not-joined requests #323.
Introduce joint MIP lists based on the ec-earth3 configurations, distinguish between mip_name, mip_list and mip_label in order to prepare for joint and not-joined requests #323.

goord/ece2cmor3,goord/ece2cmor3