tests: add a basic pre-condition assertion test

tests: add a basic pre-condition assertion test

There is currently no "basic" pre-condition assertion test, even though
we have the support for it.  Add one, so that the support code is
exercised.  The new test checks that passing a wrong MIP version to
bt_grbt_graph_create triggers an assertion.

Change-Id: Iddaa7905684e1bda3a731ab215a0e42b5eb62633
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/10056
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>