Description of problem:
When configure bad http(s) proxy in /etc/virt-who.conf, virt-who can still get and send the hyperv, remote libvirt and kubevirt to entitlement server successfully.

For esx, virt-who is failed to get esx mapping with bad http(s), which works as expected.

For nutanix/ahv, there is known bz1992619.

And because of bz1989354, we cannot make sure if the http(s) take effect when set with available value, we can just make sure virt-who can get and send mapping for all hypervisors normally with available http(s).

Version-Release number of selected component (if applicable):
virt-who-1.31.26-1.el9.noarch

How reproducible:
always

Expected results:
Virt-who should be failed to get mapping from each hypervisor with bad http(s).