webos-image: Update layer pins for 2014-03-31

meta-webos as of 2014-03-31 10:02:17 -0700

42c3162 webos-image: db8=134
84e4331 webos-image: luna-service2=182
64f0567 webos_enhanced_submissions: Make it easier to use AUTOREV

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

Change-Id: Ia4519c45c4a19729e8f081a3f03828e288ce66a0
Reviewed-on: https://g2g.palm.com/5164
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>