openstack-extra-checks throws a false positive when given invalid credentials

[Vladimir Grevtsev]

$ ./openstack-extra-checks.sh ~/fce-demo/novarc
================================================================================
Running extra Openstack checks on Sun Sep 20 10:54:22 UTC 2020.
================================================================================

Running Glance image format test
Failed to discover available identity versions when contacting http://172.27.84.233:5000/v3. Attempting to parse version from URL.
Bad Request (HTTP 400)
Result: [PASS]