Snapshot folders not specified in Hyperion gridscan commissioning plan

After separate snapshot folders were specified in
* #1783

the gridscan commissioning plan for Hyperion no longer supplies the correct parameters

## Acceptance Criteria
- Specific criteria that will be used to judge if the issue is fixed

Start by reviewing the Hyperion gridscan commissioning plan and comparing its parameters with the separate snapshot-folder specification in issue #1783. Done means the plan supplies the correct snapshot-folder parameters and its behavior can be verified against the resulting commissioning requirements.

Written by the indexing model from the issue text.