usbguard: Added user and group entries.

USBGuard is a system daemon added to facilitate blocking new USB
devices at the lockscreen while allowing whitelisted devices.

BUG=None
TEST=emerge-${BOARD} usbguard

Change-Id: I1ef16e22cdd2daa99bead37b2d77cff61580a8d7
Signed-off-by: Allen Webb <allenwebb@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1169531
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
diff --git a/profiles/base/accounts/group/usbguard b/profiles/base/accounts/group/usbguard
new file mode 100644
index 0000000..c0fbec6
--- /dev/null
+++ b/profiles/base/accounts/group/usbguard
@@ -0,0 +1,3 @@
+group:usbguard
+gid:20123
+users:usbguard
diff --git a/profiles/base/accounts/user/usbguard b/profiles/base/accounts/user/usbguard
new file mode 100644
index 0000000..9a94649
--- /dev/null
+++ b/profiles/base/accounts/user/usbguard
@@ -0,0 +1,6 @@
+user:usbguard
+uid:20123
+gid:20123
+gecos:USB device whitelisting daemon
+home:/dev/null
+shell:/bin/false