Adding APIs to reload config, recycle db connections and ping server (#3096)

* Adding APIs to reload config, recycle db connections and ping server

* Fixing unit test

* Adding unit tests

api/general_test.go

@@ -0,0 +1,40 @@
+// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package api
+
+import (
+	"testing"
+)
+
+func TestGetClientProperties(t *testing.T) {
+	th := Setup().InitBasic()
+
+	if props, err := th.BasicClient.GetClientProperties(); err != nil {
+		t.Fatal(err)
+	} else {
+		if len(props["Version"]) == 0 {
+			t.Fatal()
+		}
+	}
+}
+
+func TestLogClient(t *testing.T) {
+	th := Setup().InitBasic()
+
+	if ret, _ := th.BasicClient.LogClient("this is a test"); !ret {
+		t.Fatal("failed to log")
+	}
+}
+
+func TestGetPing(t *testing.T) {
+	th := Setup().InitBasic()
+
+	if m, err := th.BasicClient.GetPing(); err != nil {
+		t.Fatal(err)
+	} else {
+		if len(m["version"]) == 0 {
+			t.Fatal()
+		}
+	}
+}