[Feature][YUKUAI_patch]add 18.02 code

Only Configure: No
Affected branch: master
Affected module: unknow
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No

Change-Id: I7f71153004f10fc0ea5adfa083866aaeeb1053ac
diff --git a/rootfs/etc/default/useradd b/rootfs/etc/default/useradd
new file mode 100644
index 0000000..782aeef
--- /dev/null
+++ b/rootfs/etc/default/useradd
@@ -0,0 +1,8 @@
+# useradd defaults file
+GROUP=100
+HOME=/home
+INACTIVE=-1
+EXPIRE=
+SHELL=/bin/sh
+SKEL=/etc/skel
+CREATE_MAIL_SPOOL=no