Config Array Syntax (#8204)

* refactor util encryption library so it doesn't have to import log

* add util.SplitString to handle space and/or comma-separated config lines

* go fmt

pkg/api/pluginproxy/pluginproxy_test.go

@@ -23,9 +23,14 @@ func TestPluginProxy(t *testing.T) {
 		setting.SecretKey = "password"
 
 		bus.AddHandler("test", func(query *m.GetPluginSettingByIdQuery) error {
+			key, err := util.Encrypt([]byte("123"), "password")
+			if err != nil {
+				return err
+			}
+
 			query.Result = &m.PluginSetting{
 				SecureJsonData: map[string][]byte{
-					"key": util.Encrypt([]byte("123"), "password"),
+					"key": key,
 				},
 			}
 			return nil