webos-image-devel: Add sp-memusage package

Add sp-memusage package to webos-image-devel. The sp-memusage tool is
used for monitoring:
- CPU utilization
- Memory use

Open-webOS-DCO-1.0-Signed-off-by: Lokesh Kumar Goel <lokeshkumar.goel@lge.com>

Change-Id: I641efc5d33f5dfe84b8596784f752b63b93357e4
Reviewed-on: https://g2g.palm.com/2080
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>