Improved exception handling

Error messsage returned frin server is added to HTTP Error.

Author: TomasVrabel

orionsdk/swisclient.py

@@ -48,5 +48,13 @@ def _req(self, method, frag, data=None):
                                 verify=self.verify,
                                 auth=self.credentials,
                                 headers={'Content-Type': 'application/json'})
+		
+        # try to extract reason from response when request returns error
+        if 400 <= resp.status_code < 600:
+            try:
+                resp.reason = json.loads(resp.text)['Message'];
+            except:
+                pass;
+			 
         resp.raise_for_status()
         return resp