webos-image: Update layer pins for 2013-04-18

meta-webos as of 2013-04-18 16:52:11 -0700

6ba0341 webos: Select udev provider based on DISTRO_FEATURES
220cd75 packagegroup-webos-boot: Drop and use packagegroup-core-boot instead
177a10a distro: webos: set PREFERRED_PROVIDER_jpeg to libjpeg-turbo
8340d38 webos: Define VIRTUAL-RUNTIME_init-manager and use it
bddd380 lsb: Add patch to make lsb_release work if there are parens in codename

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