hcsvlab-421: fixed up the clear_corpus task when I noticed the issue...
Merge branch 'master' of github.com:IntersectAustralia/hcsvlab
Merge branch 'master' of github.com:IntersectAustralia/hcsvlab
Merge branch 'master' of github.com:IntersectAustralia/hcsvlab
HCSVLAB-431: Allow control of the ingest process via added parameterisation