support sles12sp3 servicenode installation (#5426)

* support sles12sp3 servicenode installation

* polished

xCAT-server/share/xcat/install/scripts/post.xcat

@@ -270,9 +270,18 @@ if [ $? -eq 0 ]; then
 fi
 
 if [ $hassystemd -eq 1 ] ; then
-    cat >/etc/systemd/system/xcatpostinit1.service <<'EOF'
+    if [[ $OSVER == sles12* ]]; then
+        cat >/etc/systemd/system/xcatpostinit1.service <<'EOF'
+#INCLUDE:/install/postscripts/xcatpostinit1.service.yast2#
+EOF
+        cat >/opt/xcat/xcatpostinit1.service.sles <<'EOF'
 #INCLUDE:/install/postscripts/xcatpostinit1.service#
 EOF
+    else
+        cat >/etc/systemd/system/xcatpostinit1.service <<'EOF'
+#INCLUDE:/install/postscripts/xcatpostinit1.service#
+EOF
+    fi
     if [ "$XCATDEBUGMODE" = "1" ] || [ "$XCATDEBUGMODE" = "2" ]; then
         msgutil_r "$MASTER_IP" "debug" "/etc/systemd/system/xcatpostinit1.service generated" "/var/log/xcat/xcat.log" "$log_label"
     fi

xCAT/postscripts/xcatpostinit1.install

@@ -48,6 +48,10 @@ start)
     if [ -r /opt/xcat/xcatinstallpost ]; then
       /opt/xcat/xcatinstallpost
     fi
+    if [ -f /opt/xcat/xcatpostinit1.service.sles ]; then
+        rm -rf /etc/systemd/system/xcatpostinit1.service
+        mv /opt/xcat/xcatpostinit1.service.sles /etc/systemd/system/xcatpostinit1.service
+    fi
   fi
 
   ;;

xCAT/postscripts/xcatpostinit1.service.yast2

@@ -0,0 +1,12 @@
+[Unit]
+Description=xcat service on compute node, the framework to run postbootscript during OS provision 
+After=network.target rsyslog.service YaST2-Firstboot.service
+
+[Service]
+Type=oneshot
+ExecStart=/opt/xcat/xcatpostinit1 start
+ExecStop=/opt/xcat/xcatpostinit1 stop
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target