Adding babeltrace submodule

Add babeltrace as git submodule, ctf-traces will be used for testing.

Signed-off-by: Francis Giraldeau <francis.giraldeau@gmail.com>
Do not track private user config

Signed-off-by: Francis Giraldeau <francis.giraldeau@gmail.com>
Use babeltrace test traces

Locate traces under babeltrace for test input.

Signed-off-by: Francis Giraldeau <francis.giraldeau@gmail.com>