https://github.com/rhinstaller/kickstart-tests/issues/1377

This is follow-up of eDNS tests sharing ks.in file in https://github.com/rhinstaller/kickstart-tests/pull/1374 but applies also to other already existing tests.

If we don't fix it the CI in kickstart-test repository won't be run on all the affected tests properly.

The solution should be used on /test-os-variants and /test-tmt kickstart-test repo workflows,