SDK-based commands incorrectly warn about unsupported versions

[Stephen Finucane]

When using a command that uses SDK client under the hood, we incorrectly warn about unsupported versions. This is in spite of SDK supporting auto-negotation. For example:

❯ openstack image list --os-image-api-version 2.3
image API version 2.3 is not in supported versions: 1, 2
+--------------------------------------+--------------------------+--------+
| ID | Name | Status |
+--------------------------------------+--------------------------+--------+
| ad3de20f-f97e-43d4-91cc-03eb3e73d4e3 | cirros-0.6.3-x86_64-disk | active |
+--------------------------------------+--------------------------+--------+

❯ openstack server list --os-compute-api-version 2.96
compute API version 2.96 is not in supported versions: 2, 2.1

❯ openstack network list --os-network-api-version 2.6
network API version 2.6 is not in supported versions: 2, 2.0
+--------------------------------------+---------+----------------------------------------------------------------------------+
| ID | Name | Subnets |
+--------------------------------------+---------+----------------------------------------------------------------------------+
| 1ccb72c3-159d-469d-aca7-e2ec9b0e38f5 | public | 5e005de3-6107-474b-8a14-f325b48a0cc9, c3701e64-c92b-431f-8634-637646533fb6 |
| 4b3c5b3e-f430-49c2-9804-d30639adf731 | shared | b0b52536-ce07-4752-87fa-7e19cb7ba3d9 |
| 74a23c39-a30d-4892-9b48-94edf7a5c9ae | private | 150adaa6-d9de-48c8-9352-de982502ed1a, def332f8-fb08-469a-a5c2-a9ac69642846 |
+--------------------------------------+---------+----------------------------------------------------------------------------+

Of these, only the last is likely correct. We should not raise these warnings elsewhere.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/python-openstackclient/+/946946