fwupd: Add fwupd user and group

Add fwupd user and group, so that fwupdtool can run as something
other than root.

BUG=b:121131967
TEST=emerge-coral fwupd

Change-Id: Ibfc6d7ebb5a48db14f15034a4261cdf055cbcc1c
Reviewed-on: https://chromium-review.googlesource.com/1446276
Commit-Ready: Daniel Campello <campello@chromium.org>
Tested-by: Daniel Campello <campello@chromium.org>
Reviewed-by: Benson Leung <bleung@google.com>
diff --git a/profiles/base/accounts/group/fwupd b/profiles/base/accounts/group/fwupd
new file mode 100644
index 0000000..0cbb6a2
--- /dev/null
+++ b/profiles/base/accounts/group/fwupd
@@ -0,0 +1,3 @@
+group:fwupd
+gid:20130
+users:fwupd
diff --git a/profiles/base/accounts/user/fwupd b/profiles/base/accounts/user/fwupd
new file mode 100644
index 0000000..ed619dc
--- /dev/null
+++ b/profiles/base/accounts/user/fwupd
@@ -0,0 +1,6 @@
+user:fwupd
+uid:20130
+gid:20130
+gecos:Firmware Update Tool. /usr/libexec/fwupd/fwupdtool runs as this user.
+home:/dev/null
+shell:/bin/false