ContentLoader: Allow nar computation checks
"nar" computation checks can happen on files too.
This also deduplicates tests code on content and directory ones.
Related to T3781
Related to swh/meta$1477
Migrated from D8636 (view on Phabricator)
Staging instance, all changes can be removed at any time
"nar" computation checks can happen on files too.
This also deduplicates tests code on content and directory ones.
Related to T3781
Related to swh/meta$1477
Migrated from D8636 (view on Phabricator)