layer.conf: Add thud to LAYERSERIES_CORENAMES

With the release approaching, add thud to LAYERSERIES_CORENAMES and update
oe-core to use this release series. "sumo" will be removed during M4 in
the next couple of weeks so people need to start updating their master
layers in preperation for release.

(From OE-Core rev: 986792481fa005fe136fd4b4e388042492b1ad8a)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/conf/layer.conf

@@ -7,12 +7,12 @@ BBFILE_COLLECTIONS += "core"
 BBFILE_PATTERN_core = "^${LAYERDIR}/"
 BBFILE_PRIORITY_core = "5"
 
-LAYERSERIES_CORENAMES = "sumo"
+LAYERSERIES_CORENAMES = "sumo thud"
 
 # This should only be incremented on significant changes that will
 # cause compatibility issues with other layers
 LAYERVERSION_core = "11"
-LAYERSERIES_COMPAT_core = "sumo"
+LAYERSERIES_COMPAT_core = "thud"
 
 BBLAYERS_LAYERINDEX_NAME_core = "openembedded-core"