Change the xattr entry hash to use an unsighed char by default (#2222832)
Note: we can't add binary data into patches when using patch tool to
apply them, so, both image files from the original patch were added
manually to the srpm, and then are installed on their proper test
directories during %prep phase.
Resolves: RHEL-10467
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
