Support 2.2 Channel INFO

[TondaKrist]

Info response for INFO 1 or INFO 1-1 returns different XML in latest Casparcg 2.2 or higher:
So it is not compatible with your model when parsing channel or layer info.

<?xml version="1.0" encoding="utf-8"?>
<channel>
   <framerate>50</framerate>
   <framerate>1</framerate>
   <mixer>
      <audio>
         <volume>225050624</volume>
         <volume>217513984</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
         <volume>0</volume>
      </audio>
   </mixer>
   <stage>
      <layer>
         <layer_1>
            <background>
               <producer>empty</producer>
            </background>
            <foreground>
               <file>
                  <clip>0</clip>
                  <clip>30.960000000000001</clip>
                  <name>demo.mpg</name>
                  <path>G:/ONAIR/VIDEA/demo.mpg</path>
                  <streams>
                     <file>
                        <streams_0>
                           <fps>25</fps>
                           <fps>1</fps>
                        </streams_0>
                        <streams_1>
                           <fps>0</fps>
                           <fps>0</fps>
                        </streams_1>
                     </file>
                  </streams>
                  <time>7.7000000000000002</time>
                  <time>30.960000000000001</time>
               </file>
               <loop>true</loop>
               <paused>false</paused>
               <producer>ffmpeg</producer>
            </foreground>
         </layer_1>
      </layer>
   </stage>
</channel>