runtime_probe: Added user and group entries.

Runtime Probe is an on-demand daemon that returns protocol buffer about device
status via DBus call.

BUG=chromium:908006, b:119155505
TEST=emerge-nami runtime_probe ( cherry-pick with CL:1335807 and CL:1335709 )

Change-Id: Ic9180fed7b4872f226adb559605e5b67512a6161
Reviewed-on: https://chromium-review.googlesource.com/1349389
Commit-Ready: Chun-ta Lin <itspeter@chromium.org>
Tested-by: Chun-ta Lin <itspeter@chromium.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Mattias Nissler <mnissler@chromium.org>
diff --git a/profiles/base/accounts/group/runtime_probe b/profiles/base/accounts/group/runtime_probe
new file mode 100644
index 0000000..80b825c
--- /dev/null
+++ b/profiles/base/accounts/group/runtime_probe
@@ -0,0 +1,3 @@
+group:runtime_probe
+gid:20117
+users:runtime_probe
diff --git a/profiles/base/accounts/user/runtime_probe b/profiles/base/accounts/user/runtime_probe
new file mode 100644
index 0000000..a4ec9e6
--- /dev/null
+++ b/profiles/base/accounts/user/runtime_probe
@@ -0,0 +1,6 @@
+user:runtime_probe
+uid:20117
+gid:20117
+gecos:CrOS Runtime Probe
+home:/dev/null
+shell:/bin/false