Fix MOTD not include system ID on controller-1

The Message of the Day (MOTD) is assembled from several
sources, including: /etc/motd.head; /etc/sysinv/motd.system;
/etc/platform/motd.license; and /etc/motd.tail. In the event
that /etc/sysinv/motd.system is missing, the MOTD will simply
exclude the system name.

During the bootstrap process of controller-0, the motd.system
file is generated utilizing the predefined system name.
However, this is not the case during the bootstrap process of
controller-1, where the file remains ungenerated.

The proposed solution initialize the motd.system file using a
puppet template during controller-1 unlocking step.

Test Plan:
- PASS: Fresh Install DX Env
- PASS: Verify MOTD message on controller-0.
- PASS: Verify MOTD message on controller-1.

- PASS: Fresh Install STD Env
- PASS: Verify MOTD message on controller-0.
- PASS: Verify MOTD message on controller-1.

Closes-bug: 2037551

Signed-off-by: Jorge Saffe <jorge.saffe@windriver.com>
Change-Id: I97b7e140baf837aecd961d7ea8fc5947fcae2106

puppet-manifests/src/modules/platform/manifests/config.pp

@@ -15,6 +15,7 @@ class platform::config
   include ::platform::params
   include ::platform::anchors
   include ::platform::config::pam_systemd
+  include ::platform::config::system_name
 
   stage { 'pre':
     before => Stage['main'],
@@ -257,6 +258,18 @@ class platform::config::hostname {
   }
 }
 
+class platform::config::system_name {
+  $system_name = $platform::params::system_name
+
+  file { '/etc/sysinv/motd.system':
+    ensure  => present,
+    owner   => 'root',
+    group   => 'root',
+    mode    => '0644',
+    content => template('platform/system_name.erb'),
+  }
+}
+
 class platform::config::apparmor {
   include ::platform::params
 

puppet-manifests/src/modules/platform/templates/system_name.erb

@@ -0,0 +1,9 @@
+<%
+if !@system_name.nil? && !@system_name.empty?
+-%>
+
+<%= "====================================================================" %>
+<%= "         SYSTEM: #{@system_name}" %>
+<%= "====================================================================" %>
+
+<% end -%>