Preconditions
No collections in hub (this is only relevant for step 6)
Steps to reproduce
1-Login with admin
2-Go to collections -> namespaces and create 'amazon' namespace
3-Upload collection attached in this ticket (amazon-aws-1.5.0.tar.gz)
4-Go to collections -> approval and reject it.
5-Go to repositories -> rejected -> collection versions tab and remove it.
6-Make this call to make sure collection is gone: count 0 should be returned
GET http://localhost:5001/pulp_ansible/galaxy/default/api/v3/plugin/ansible/search/collection-versions/
7-Go to amazon namespace and try to upload amazon-aws-1.5.0.tar.gz
Expected test result
Artifact is uploaded (appears in Approval screen)
Actual test result
"Artifact already exists" message.
Artifact can't be uploaded