meta-poky/conf: move default templates to conf/templates/default/

This follows the changes in oe-core, where templates are expected
to be under conf/templates.

(From meta-yocto rev: 29608bd03e1bffa124353061617b1d71370a4e5f)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

.templateconf

@@ -1,2 +1,2 @@
 # Template settings
-TEMPLATECONF=${TEMPLATECONF:-meta-poky/conf}
+TEMPLATECONF=${TEMPLATECONF:-meta-poky/conf/templates/default}