webos-image: Update layer pins for 2014-03-21

meta-webos as of 2014-03-21 09:45:07 -0700

823af3a icecc.bbclass: exclude icecc variables from signature

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

Change-Id: I3db5f8878af7c414401e12276b640282b85b3f4a
Reviewed-on: https://g2g.palm.com/5061
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>