correctly unnest channel config

While we were storing the correct self.data for nested channel
configs, we weren't actually using self.data to when we attempted to
connect to irc channels. Fixup the data variable early enough that IRC
channel connection in the ER bot should work again.

Change-Id: I2758fb79e3b424def53415d6fdc41fbc99d0ca9f

elastic_recheck/bot.py

@@ -224,11 +224,12 @@ class MessageConfig(dict):
 
 class ChannelConfig(object):
     def __init__(self, data):
-        self.data = data
         # for compatibility reasons we support a pre channel hierarchy
         # model of the world.
         if 'channels' in data:
-            self.data = data['channels']
+            data = data['channels']
+
+        self.data = data
 
         keys = data.keys()
         for key in keys: