Don't set "config" and/or "device" properties when replacing profile

Author: turtle0x1

CHANGELOG.md

@@ -4,6 +4,12 @@ All Notable changes to `php-lxd` will be documented in this file.
 
 Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
+# Unreleased
+
+## Changed
+    Don't set "config" and/or "device" properties when replacing profile
+
+
 # [0.22.0]
 
 ## Added

src/Endpoint/Profiles.php

@@ -155,8 +155,14 @@ public function replace($name, $description = '', array $config = null, array $d
     {
         $profile                = [];
         $profile['description'] = $description;
-        $profile['config']      = $config;
-        $profile['devices']     = $devices;
+
+        if (!empty($config)) {
+            $profile['config'] = $config;
+        }
+
+        if (!empty($devices)) {
+            $profile['devices'] = $devices;
+        }
 
         $config = [
             "project"=>$this->client->getProject()