PLT-2899 adding clustering of app servers (#3682)

* PLT-2899 adding clustering of app servers

* PLT-2899 base framework

* PLT-2899 HA backend

* PLT-2899 Fixing config file

* PLT-2899 adding config syncing

* PLT-2899 set System console to readonly when clustering enabled.

* PLT-2899 Fixing publish API

* PLT-2899 fixing strings

model/cluster_info_test.go

@@ -0,0 +1,32 @@
+// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestClusterInfoJson(t *testing.T) {
+	cluster := ClusterInfo{Id: NewId(), InterNodeUrl: NewId(), Hostname: NewId()}
+	json := cluster.ToJson()
+	result := ClusterInfoFromJson(strings.NewReader(json))
+
+	if cluster.Id != result.Id {
+		t.Fatal("Ids do not match")
+	}
+}
+
+func TestClusterInfosJson(t *testing.T) {
+	cluster := ClusterInfo{Id: NewId(), InterNodeUrl: NewId(), Hostname: NewId()}
+	clusterInfos := make([]*ClusterInfo, 1)
+	clusterInfos[0] = &cluster
+	json := ClusterInfosToJson(clusterInfos)
+	result := ClusterInfosFromJson(strings.NewReader(json))
+
+	if clusterInfos[0].Id != result[0].Id {
+		t.Fatal("Ids do not match")
+	}
+
+}