dns-global-exclusive-tls-{ksnet,initramfs} failing on daily-iso, rawhide, fedora-eln with "curl: (6) Could not resolve host" in initramfs.

[rvykydal]

Part of INSTALLER-4420

kstest.log

virt-install.log

First hit on daily-iso in #1493. I am splitting it out from the issue as it seems to be special case concerning only stage2-from-compose tests (dns-global-exclusive-tls-* tests using dns resolution already in initramfs)

[rvykydal]

PR to disable the tests: #1531