public static String makeServiceKey(String iface, String version){
		String serviceKey = iface;
		if (version!=null && version.trim().length()>0) {
			serviceKey += "#".concat(version);
		}
		return serviceKey;
	}
make service key

@param iface
@param version
@return
larkmidtable-web/larkmt-rpc/src/main/java/com/larkmidtable/rpc/remoting/provider/XxlRpcProviderFactory.java