tests: Move tap-driver.sh out of the autotools aux directory

tests: Move tap-driver.sh out of the autotools aux directory

We have made local modifications to this script, move it to the test
suite directory so it doesn't get overwritten by an updated version from
autotools.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Change-Id: Ie7c848c1dbd3739ed5caeb22befe73e6540e3133
Reviewed-on: https://review.lttng.org/c/babeltrace/+/1688
Tested-by: jenkins <jenkins@lttng.org>
Reviewed-by: Philippe Proulx <eeppeliteloop@gmail.com>