Better error message on unimplemented methods

[l3nz]

At the moment we have a very opaque error message - this comes from Channel in ARI 1.0.0

• @SInCE ari_1_5_0
  *********************************************************/
  public void snoopChannel(String channelId, .....){
  throw new UnsupportedOperationException("Method availble from ...");
  }

It should be something like:
Method available since ARI_1_5_0 but remote end is ARI_1_0_0

So it makes more sense.