tweak the notifier log line just a little

Author: joshk

lib/travis/tasks/middleware/logging.rb

@@ -1,3 +1,5 @@
+require 'active_support/core_ext/string/inflections'
+
 module Travis
   module Tasks
     module Middleware
@@ -10,7 +12,7 @@ def call(worker, message, queue, &block)
           uuid, notifier, _, payload, params = *message['args']
           data = Hash.new.tap do |data|
             data['queue'] = queue
-            data['notifier'] = notifier.to_s.downcase.split('::')[2]
+            data['notifier'] = notifier.to_s.underscore.split('/')[2]
             if payload['build']
               data['build'] = payload['build']['id']
             elsif message['build_id']