Add user and group for CFM devices applications

Add a unified user and group for cfm peripheral firmware updaters
including Mimo(displaylink, sis, realtek) and huddly.

BUG=chromium:706485
TEST=None

Change-Id: Ic0d449a9ef015b12713e68311c37bc1c08b7a10d
Reviewed-on: https://chromium-review.googlesource.com/493792
Commit-Ready: Zhongze Hu <frankhu@google.com>
Tested-by: Zhongze Hu <frankhu@google.com>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
diff --git a/profiles/base/accounts/group/cfm-firmware-updaters b/profiles/base/accounts/group/cfm-firmware-updaters
new file mode 100644
index 0000000..91d6281
--- /dev/null
+++ b/profiles/base/accounts/group/cfm-firmware-updaters
@@ -0,0 +1,3 @@
+group:cfm-firmware-updaters
+gid:288
+users:cfm-firmware-updaters
diff --git a/profiles/base/accounts/user/cfm-firmware-updaters b/profiles/base/accounts/user/cfm-firmware-updaters
new file mode 100644
index 0000000..bac90fa
--- /dev/null
+++ b/profiles/base/accounts/user/cfm-firmware-updaters
@@ -0,0 +1,6 @@
+user:cfm-firmware-updaters
+uid:288
+gid:288
+gecos:CFM(Chromebox for Meetings) peripheral firmware updaters
+home:/dev/null
+shell:/bin/false