issue with filtering values

[paolap]

I think this eventually will solve itself when we'll have a validation, currently if there is not value pass for a constraint or if that value is not available locally we behave in same way.
This means that if I pass a misspelled model name for example I will get as a result all the model available matching the other constraints, rather then a warning my model doesn't exist.
I think this is the source of the issue:

for key, value in six.iteritems(dataset_constraints):
if len(value) > 0:
filters.append(getattr(C6Dataset,key).ilike(any_([x for x in value])))

        # If this key was filtered get a list of the matching values, used
        # in the ESGF query
        terms[key] = [x[0] for x in (s.query(getattr(C6Dataset,key))
            .distinct()
            .filter(getattr(C6Dataset,key).ilike(any_([x for x in value]))))]

I suppose this worked fine when we were running local and missing separately. It must have been something to do with changing the workflow