Revert "Switch storage for CI artifacts to PS5"

[gnuoy]

This reverts commit bc869a4.

[freyes]

This change fixes the following error

Error uploading to defaults.prodstack5
Traceback (most recent call last):
  File \"/var/lib/zuul/builds/d59770358a0c4725930d9ef63c8f2185/work/tmp/ansible_zuul_swift_upload_payload_pc_zn91x/ansible_zuul_swift_upload_payload.zip/ansible/modules/zuul_swift_upload.py\", line 316, in ansible_main
  File \"/var/lib/zuul/builds/d59770358a0c4725930d9ef63c8f2185/work/tmp/ansible_zuul_swift_upload_payload_pc_zn91x/ansible_zuul_swift_upload_payload.zip/ansible/modules/zuul_swift_upload.py\", line 290, in run
  File \"/var/lib/zuul/builds/d59770358a0c4725930d9ef63c8f2185/work/tmp/ansible_zuul_swift_upload_payload_pc_zn91x/ansible_zuul_swift_upload_payload.zip/ansible/modules/zuul_swift_upload.py\", line 97, in __init__
  File \"/var/lib/zuul/ansible-bin/2.9/lib/python3.8/site-packages/keystoneauth1/identity/base.py\", line 375, in get_endpoint
    endpoint_data = self.get_endpoint_data(
  File \"/var/lib/zuul/ansible-bin/2.9/lib/python3.8/site-packages/keystoneauth1/identity/base.py\", line 271, in get_endpoint_data
    service_catalog = self.get_access(session).service_catalog
  File \"/var/lib/zuul/ansible-bin/2.9/lib/python3.8/site-packages/keystoneauth1/identity/base.py\", line 134, in get_access
    self.auth_ref = self.get_auth_ref(session)
  File \"/var/lib/zuul/ansible-bin/2.9/lib/python3.8/site-packages/keystoneauth1/identity/generic/base.py\", line 208, in get_auth_ref
    return self._plugin.get_auth_ref(session, **kwargs)
  File \"/var/lib/zuul/ansible-bin/2.9/lib/python3.8/site-packages/keystoneauth1/identity/v3/base.py\", line 187, in get_auth_ref
    resp = session.post(token_url, json=body, headers=headers,
  File \"/var/lib/zuul/ansible-bin/2.9/lib/python3.8/site-packages/keystoneauth1/session.py\", line 1139, in post
    return self.request(url, 'POST', **kwargs)
  File \"/var/lib/zuul/ansible-bin/2.9/lib/python3.8/site-packages/keystoneauth1/session.py\", line 976, in request
    raise exceptions.from_response(resp, method, url)
keystoneauth1.exceptions.http.BadRequest: Expecting to find domain in project. The server could not comply with the request since it is either malformed or otherwise incorrect. The client is assumed to be in error. (HTTP 400) (Request-ID: req-fe20882b-631f-45ed-8125-eede4d96f4eb)
",