Cancelling all the testcases regarding virsh iface-* for distro version rhel 9 and
above as it is unsupported now in rhel 9!
Documentation for Reference : https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/considerations_in_adopting_rhel_9/assembly_virtualization_considerations-in-adopting-rhel-9
Signed-off-by: Anushree Mathur <[email protected]>

In libvirt version lesser than 9.0.0 external snapshot deletion was
unsupported, but the testcase is failing now with the error message as
"Snapshot delete succeed but expect fail" because the deletion is
supported now with external disk.
For reference : https://libvirt.org/news.html#v9-0-0-2023-01-16
Signed-off-by: Anushree Mathur <[email protected]>