webos-image: Update layer pins for 2013-12-16

meta-webos as of 2013-12-15 22:14:59 -0800

2822087 webos-image: luna-service2=169
6e43f09 webos-image: luna-prefs=6

Open-webOS-DCO-1.0-Signed-off-by: Jongho Kim <jongho1208.kim@lge.com>

Change-Id: I0c96b95afd104b6de7f769112bbe549cdff88b14
Reviewed-on: https://g2g.palm.com/4214
Reviewed-by: DCO Verification
Reviewed-by: Build Verification
Reviewed-by: Jongho Kim <jongho1208.kim@lge.com>
Tested-by: Jongho Kim <jongho1208.kim@lge.com>