Add an example restart script for distributed cloud

This is the type of script that can be invoked when
applying designer patches to test distributed cloud changes.

Change-Id: I3c743bf550e28f54f5dd4b1100ef561573e88e1a
Story: 2008137
Task: 41178
Signed-off-by: albailey <Al.Bailey@windriver.com>

centos_pkg_dirs

@@ -2,6 +2,7 @@ cgcs-patch
 patch-alarm
 patch-scripts/EXAMPLE_0001
 patch-scripts/EXAMPLE_0002
+patch-scripts/EXAMPLE_DC
 patch-scripts/EXAMPLE_RR
 patch-scripts/EXAMPLE_MTCE
 patch-scripts/EXAMPLE_VIM

patch-scripts/EXAMPLE_DC/centos/EXAMPLE_DC.spec

@@ -0,0 +1,28 @@
+Name: EXAMPLE_DC
+Summary: StarlingX In-Service DistCloud Patch Script Example
+Version: 1.0
+Release: %{tis_patch_ver}%{?_tis_dist}
+License: Apache-2.0
+Group: base
+Packager: Wind River <info@windriver.com>
+Source0: distcloud-restart-example
+
+BuildArch: noarch
+
+%install
+    install -Dp -m 700 %{S:0} %{buildroot}%{_patch_scripts}/%{name}
+
+%description
+%{summary}
+
+%files
+%defattr(-,root,root,-)
+%{_patch_scripts}/*
+
+%post
+cp -f %{_patch_scripts}/%{name} %{_runtime_patch_scripts}/
+exit 0
+
+%preun
+cp -f %{_patch_scripts}/%{name} %{_runtime_patch_scripts}/
+exit 0

patch-scripts/EXAMPLE_DC/centos/build_srpm.data

@@ -0,0 +1,3 @@
+COPY_LIST="scripts/*"
+TIS_PATCH_VER=1
+

patch-scripts/EXAMPLE_DC/scripts/distcloud-restart-example

@@ -0,0 +1,48 @@
+#!/bin/bash
+#
+# Copyright (c) 2020 Wind River Systems, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+#
+# This script provides an example in-service distcloud restart
+#
+
+#
+# The patching subsystem provides a patch-functions bash source file
+# with useful function and variable definitions.
+#
+. /etc/patching/patch-functions
+
+#
+# We can now check to see what type of node we're on, if it's locked, etc,
+# and act accordingly
+#
+
+#
+# Declare an overall script return code
+#
+declare -i GLOBAL_RC=$PATCH_STATUS_OK
+
+
+if is_controller
+then
+    processes_to_restart="dcmanager-manager dcmanager-api \
+                          dcmanager-audit dcmanager-orchestrator \
+                          dcorch-engine dcorch-sysinv-api-proxy dcdbsync-api \
+                          dcorch-patch-api-proxy dcorch-identity-api-proxy"
+    /usr/local/sbin/patch-restart-processes ${processes_to_restart}
+    if [ $? != 0 ] ; then
+        loginfo "patching restart failed"
+        loginfo "... process-restart ${processes_to_restart}"
+        exit ${PATCH_STATUS_FAILED}
+    fi
+fi
+
+# Nothing to restart on workers or storage
+
+#
+# Exit the script with the overall return code
+#
+exit $GLOBAL_RC