Raise exception if filtering on tag not present in Dataset

Merged Ben Couturier requested to merge check_tag_exists into master

Instead of returning an empty dataset, raise an exception when filtering on the tag that does not exist.

e.g. one will get:

$ apd-list-pfns SL rds_hadronic --tag event_type --value  13863401 --polarity magdown
ValueError: Tag event_type unknown. Did you mean eventtype ?
Available tags: config, polarity, eventtype, datatype, version, name, state

To be merged after !24 (merged) as it includes it too to have the changes on the gitlab-ci.

Closes #10 (closed)

Edited by Ben Couturier

Merge request reports