packagegroup-core-tools-debug: add ltrace component

The tools-debug package group includes strace only. We are
extended tools debug group to include additional tools, such
as ltrace.

Open-webOS-DCO-1.0-Signed-off-by: Iyad Qumei <iyad.qumei@palm.com>

Change-Id: Idc5d6235419238adeee03128e14ed61f6a6b3404
Reviewed-on: https://g2g.palm.com/1628
Reviewed-by: Build Verification
Reviewed-by: Iyad Qumei <iyad.qumei@palm.com>
Tested-by: Iyad Qumei <iyad.qumei@palm.com>
Reviewed-by: Keith Derrick <keith.derrick@lge.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>