Updated request 'pull' to show how we filter the sender hosts

docs/samples/request_pull.xml

@@ -1,22 +1,19 b''
 <?xml version="1.1" encoding="UTF-8" ?>
 <request version="3" type="pull">
     <model>post</model>
     <filter>
         <version>3</version>
         <timestamp_from>0</timestamp_from>
         <timestamp_to>0</timestamp_to>
         <tags>
             <tag>tag1</tag>
         </tags>
-    </filter>
-    <hosts>
+        <sender>
         <allow>
-            <host>*</host>
+                <key>abcehy3h9t</key>
+                <key>ehoehyoe</key>
         </allow>
-        <deny></deny>
-        <pools>
-            <pool>test1</pool>
-            <pool>test2</pool>
-        </pools>
-    </hosts>
+            <!-- There can be only allow block (all other are denied) or deny block (all other are allowed) -->
+        </sender>
+    </filter>
 </request>