experiment_family not working properly about clef HOT 3 CLOSED

saw562@raijin4 ~ $ clef --local cmip5 --model=ACCESS1.0 --experiment_family=RCP --frequency=mon --variable=tas --ensemble=r1i1p1
/g/data1/rr3/publications/CMIP5/output1/CSIRO-BOM/ACCESS1-0/1pctCO2/mon/atmos/Amon/r1i1p1/latest/tas
/g/data1/rr3/publications/CMIP5/output1/CSIRO-BOM/ACCESS1-0/abrupt4xCO2/mon/atmos/Amon/r1i1p1/latest/tas
/g/data1/rr3/publications/CMIP5/output1/CSIRO-BOM/ACCESS1-0/amip/mon/atmos/Amon/r1i1p1/latest/tas
/g/data1/rr3/publications/CMIP5/output1/CSIRO-BOM/ACCESS1-0/historical/mon/atmos/Amon/r1i1p1/latest/tas
/g/data1/rr3/publications/CMIP5/output1/CSIRO-BOM/ACCESS1-0/piControl/mon/atmos/Amon/r1i1p1/latest/tas
/g/data1/rr3/publications/CMIP5/output1/CSIRO-BOM/ACCESS1-0/rcp45/mon/atmos/Amon/r1i1p1/latest/tas
/g/data1/rr3/publications/CMIP5/output1/CSIRO-BOM/ACCESS1-0/rcp85/mon/atmos/Amon/r1i1p1/latest/tas

from clef.

The reason for that is that we don't have experiment_family in the attributes.
To fix that we decided to change local search so it will add a filter(experiment like "...%") when experiment_family is present.

To make this work properly:

• cli experiment_family can accept only one value (fixed in cmip5_args)
• experiment_family in datasets_constraints has to be a list (fixed in cli.py around line 248)
• as we did for var if experiment-family we add an extra filter to local_search in code.py
  .filter(C5Dataset.experiment.like(family_dict[family]))
  where family_dict is {'RCP' : 'rcp%' , 'decadal': 'decadal%' ...}

it works but now local_search has all this options which modify the search and lots of repetition as a consequence, would be nice to be able to add only the relevant bit of query

from clef.

I've changed the search tidied up the code to keep into consideration that some families have couldn't be captured by one expression to:
.filter(C5Dataset.experiment.like(any_(family_dict[family]))

I've also changed the code so it uses only one main search for both cmip5 and cmip6 and add one line filter for 'variable' and/or 'experiment_family' when defined in CMIP5.

also moved where I adjust the experiment_family from dataset_constraints to terms definition.
I've run tests and also try different queries and all seems to work.
In branch "localfix" which was previously merged with "tests"

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