useradd-example: exclude from world

(From OE-Core rev: 1e03ad25d8b9536d5e7f9969809a4df01e55fe3a)

Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-skeleton/recipes-skeleton/useradd/useradd-example.bb

@@ -14,6 +14,8 @@ S = "${WORKDIR}"
 
 PACKAGES =+ "${PN}-user3"
 
+EXCLUDE_FROM_WORLD = "1"
+
 inherit useradd
 
 # You must set USERADD_PACKAGES when you inherit useradd. This