[FAB-1956] Automatically generate orderer template

https://jira.hyperledger.org/browse/FAB-1956

It's easy to accidentally let the orderer template get out of sync, so
this CR causes the orderer unit tests to update the orderer.template
file in common/configtx/test.  Other automatic template generation
coming in the near future.

Change-Id: I5709bff35b724e4751c01d6e04392698afcf9c7a
Signed-off-by: Jason Yellick <[email protected]>

orderer/tools/configtemplate/main.go

@@ -33,11 +33,7 @@ var logger = logging.MustGetLogger("orderer/tools/baseconfig")
 
 const defaultOutputFile = "orderer.template"
 
-func main() {
-	var outputFile string
-	flag.StringVar(&outputFile, "outputFile", defaultOutputFile, "The file to write the configuration templatee to")
-	flag.Parse()
-
+func writeTemplate(outputFile string) {
 	conf := config.Load()
 	flogging.InitFromSpec(conf.General.LogLevel)
 
@@ -54,5 +50,12 @@ func main() {
 
 	logger.Debugf("Writing configuration to disk")
 	ioutil.WriteFile(outputFile, outputData, 0644)
+}
+
+func main() {
+	var outputFile string
+	flag.StringVar(&outputFile, "outputFile", defaultOutputFile, "The file to write the configuration templatee to")
+	flag.Parse()
 
+	writeTemplate(outputFile)
 }

orderer/tools/configtemplate/main_test.go

@@ -0,0 +1,25 @@
+/*
+Copyright IBM Corp. 2017 All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+                 http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package main
+
+import (
+	"testing"
+)
+
+func TestUpdateTemplate(t *testing.T) {
+	writeTemplate("../../../common/configtx/test/orderer.template")
+}