utils: fixes CLI filtering

[roksys]

• Addresses cli: improve list and status filtering reana-client#349

[diegodelemos]

I see the same error as Travis (I didn't notice it was failing until it failed locally, so I came to check 😅):

$ reana-client status -w workflow                
NAME   RUN_NUMBER   CREATED   STATUS   PROGRESS                                                 
Workflow status could not be retrieved:                                                         
tuple index out of range  

[diegodelemos]

LGTM just naming is not unified, @tiborsimko's reanahub/reana-client#349 (comment)

[mvidalgarcia]

LGTM, the only thing I'm missing is the capability of filtering when running rc status but I'm not sure if we want this.

$ rc status -w hello                         
NAME    RUN_NUMBER   CREATED               STATUS     PROGRESS
hello   1            2020-01-15T16:07:08   finished   1/1     
$ rc status -w hello --format name=hello     

$ rc status -w hello --format run_number=1