Use en_US.UTF-8 as default for LANG, which is what previously was
used and is also needed to properly work on non-us/latin setups[1].
In the customization tests, use a different value than the default
one to check that the customization does in fact work.
[1] http://git.app.eng.bos.redhat.com/git/spin-kickstarts.git/tree/rhel8/rhel-8.2-kvm-x86_64.ks#n4
Co-authored-by: Achilleas Koutsou <achilleas@koutsou.net>
Add RHEL-8.4 image test case manifests for all architectures. The set of
image types per architecture is based on what is currently available for
RHEL-8.3.
The image test case for RHEL-8.4 tar image on s390x is not added yet
because of Issue #1220.
Fixes#1167
Signed-off-by: Tomas Hozza <thozza@redhat.com>
