This patch support new API request to delete blobs from
artifact:
DELETE /artifacts/{type_name}/{artifact_id}/{blob_name}
if user wants to delete internal blob glare raises 403 error.
Co-Authored-By: Mike Fedosin <mikhail.fedosin.ext@nokia.com>
Change-Id: I8daa686df3a05158f59b33546397b23a494d5ab1