0415304ca4
Commit f16c5de757 ("pxar: bin: test `pxar list` with payload-input")
introduced a regression test for listing of split pxar archives. This
test relies on a large pxar blob file, the large size (> 100M) being
overlooked when writing the test.
In order to not depend on this file any further in the future, drop
it and rewrite the test to dynamically generate the files, needed and
further extend the test thereby also cover the archive creation and
extraction for split pxar archives.
Signed-off-by: Christian Ebner <c.ebner@proxmox.com>