Add the reference model to the job output

[jypeter]

I'm using a configuration like the following in datasets_setup.py

if onCiclad or atTGCC:
    models = [

        dict(project='CMIP6',
             model='IPSL-CM6A-LR',
             experiment='midHolocene',
             frequency='monthly',
             clim_period='last_200Y',
             ts_period='full',
             realization='r1i1p1f1',
             version='latest',
             customname='midHolocene f1'
             ),

        dict(project='CMIP6',
             model='IPSL-CM6A-LR',
             experiment='midHolocene',
             frequency='monthly',
             clim_period='last_200Y',
             ts_period='full',
             realization='r1i1p1f2',
             version='latest',
             customname='midHolocene f2'
             ),

and

reference = dict(project='CMIP6',
             model='IPSL-CM6A-LR',
             experiment='piControl',
             frequency='monthly',
             clim_period='last_200Y',
             ts_period='full',
             realization='r1i1p1f1',
             version='latest',
             customname='piControl'
             )

But I only get information about the models in the job output. Nothing (obvious) about the reference (or maybe it is there, but I have missed it because it is not printed as the models)

==> ----------------------------------- #
==> Working on models:
==> ----------------------------------- #

  experiment =  midHolocene
  customname =  midHolocene f1
  ts_period =  full
  project =  CMIP6
  version =  latest
  frequency =  monthly
  realization =  r1i1p1f1
  model =  IPSL-CM6A-LR
  clim_period =  last_200Y
  --
  --
  experiment =  midHolocene
  customname =  midHolocene f2
  ts_period =  full
  project =  CMIP6
  version =  latest
  frequency =  monthly
  realization =  r1i1p1f2
  model =  IPSL-CM6A-LR
  clim_period =  last_200Y

For debugging purpose, and since having an incorrect datasets_setup.py file seems to be a common source of errors, it could be useful to also have some clear information about the reference in the output

[jservonnat]

Done