accounts: Add 'secanomaly' user and group.

Add user and group for the secanomalyd service.

BUG=chromium:1190150
TEST=display-acct.py

Change-Id: Ib557496a859ccd07d68a0b9649c81be0b2c7f5be
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/2845244
Tested-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Allen Webb <allenwebb@google.com>
Reviewed-by: Allen Webb <allenwebb@google.com>
diff --git a/profiles/base/accounts/group/secanomaly b/profiles/base/accounts/group/secanomaly
new file mode 100644
index 0000000..d7b2a30
--- /dev/null
+++ b/profiles/base/accounts/group/secanomaly
@@ -0,0 +1,3 @@
+group:secanomaly
+gid:20178
+users:secanomaly
diff --git a/profiles/base/accounts/user/secanomaly b/profiles/base/accounts/user/secanomaly
new file mode 100644
index 0000000..e6669d0
--- /dev/null
+++ b/profiles/base/accounts/user/secanomaly
@@ -0,0 +1,6 @@
+user:secanomaly
+uid:20178
+gid:20178
+gecos:security anomaly detection daemon
+home:/dev/null
+shell:/bin/false