python:tests: Use assertMultiLineEqual() to get better failure output
When not equal a diff of the two strings highlighting the differences
will be included this way.
This is a flapping test.
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andreas Schneider <asn@samba.org> Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Mon Jul 15 13:51:03 UTC 2024 on atb-devel-224