`openstack image create --project <project name>` connects to admin URL in Red Hat OpenStack Platform

Issue

openstack image create --project <project name> connects to admin URL in Red Hat OpenStack Platform

Setting an alternate project for image creation requires the admin endpoint:

[root@rhospbl-4 ~]# openstack help image create | grep project
                              [--tag <tag>] [--project <project>]
                              [--project-domain <project-domain>]
  --project <project>   Set an alternate project on this image (name or ID)
  --project-domain <project-domain>
                        Domain the project belongs to (name or ID). This can
                        be used in case collisions between project names

Whereas changing the user's project (for authentication) does not create this issue:

[root@rhospbl-4 ~]# openstack --debug --os-cloud test --os-project-name admin  image create  --container-format bare --disk-format qcow2 --file image.qcow2 image 2>&1 | grep curl
REQ: curl -g -i -X GET http://10.0.0.6:5000/v2.0 -H "Accept: application/json" -H "User-Agent: osc-lib keystoneauth1/2.12.3 python-requests/2.10.0 CPython/2.7.5"

By default, the admin API can not be reached on the External Network and is accessible to the undercloud only. What are the workarounds?