Add the chef-client to invoke the config_chef_client script

xCAT/postscripts/chef-client

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+#This script will invoke the config_chef_client directly.
+#If the chef-server and chef-client are installed successfully at first,
+#and then on the chef-server node configure the software for the chef-client nodes.
+#We can run 
+#  updatenode  <chef-client-nodes>  chef-client 
+#To configure the softare on the chef-client node.
+
+./config_chef_client
+
+if [ $? -ne 0 ]
+then
+    errmsg="Failed to run the postscript ./config_chef_client on $node"
+    logger -t xcat -p local4.err $errmsg
+    echo $errmsg
+    exit 1
+fi
+
+exit 0;