Re-add a default suggestion for the client name

But only during the setup, not for additional clients

openvpn-install.sh

@@ -394,7 +394,7 @@ else
 	echo "Finally, tell me a name for the client certificate and configuration"
 	echo "Use one word only, no special characters"
 	until [[ "$CLIENT" =~ ^[a-zA-Z0-9_]+$ ]]; do
-		read -rp "Client name: " -e CLIENT
+		read -rp "Client name: " -e -i client CLIENT
 	done
 	echo ""
 	echo "Okay, that was all I needed. We are ready to setup your OpenVPN server now"