debug info: Skip test that depends on Python bindings

debug info: Skip test that depends on Python bindings

This test depends on the Python bindings, which don't work right now.
Skip it, so that it doesn't cause a "make check" failure while we are
repairing the bindings.

Change-Id: I8e9b1092e2794875b249b060581f4305be640a88
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/1126
Tested-by: jenkins
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>