webos-image: Update layer pins for 2014-01-28

meta-webos as of 2014-01-28 13:30:18 -0800

64a2df6 webos-image: luna-service2=172

Open-webOS-DCO-1.0-Signed-off-by: Susan Montooth <susan.montooth@lge.com>

Change-Id: I9723bf59e4f0a2d14b3b14d470ede6231df8f88a
Reviewed-on: https://g2g.palm.com/4523
Reviewed-by: DCO Verification
Build: Susan Montooth <susan.montooth@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>