Fix test_show_host_detail to support installation with ironic

When OpenStack cloud is installed with Ironic using Kolla-Ansible
there will be additional "сompute" hosts named '*-ironic'.
Proposed fix removes such hosts from hosts list used to create VM

Closes-Bug: 2038802
Change-Id: Ib5c6b816ee8f0d3bafcbfe4b72596da60849e1a3
1 file changed