reporting: add missived user and group

BUG=b:168714704
TEST=Checked for collisions with display-accts.py --lint

Change-Id: I6d114bf907b2c057a17c87bade3a49e7e88781ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/2592727
Tested-by: Kyle Williams <kdgwill@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Kyle Williams <kdgwill@chromium.org>
Auto-Submit: Kyle Williams <kdgwill@chromium.org>
diff --git a/profiles/base/accounts/group/missived b/profiles/base/accounts/group/missived
new file mode 100644
index 0000000..7fc2fd2
--- /dev/null
+++ b/profiles/base/accounts/group/missived
@@ -0,0 +1,3 @@
+group:missived
+gid:20172
+users:missived
diff --git a/profiles/base/accounts/user/missived b/profiles/base/accounts/user/missived
new file mode 100644
index 0000000..7d03a7f
--- /dev/null
+++ b/profiles/base/accounts/user/missived
@@ -0,0 +1,6 @@
+user:missived
+uid:20172
+gid:20172
+gecos:Administrative Events Handler Daemon
+home:/dev/null
+shell:/bin/false