new_contents: # Copyright 2017, Rackspace US, Inc.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  #
  
  import os
  
  import linear
  
  
  class StrategyModule(linear.StrategyModule):
      def _queue_task(self, host, task, task_vars, play_context):
          """Wipe the notification system and return for config tasks."""
          task.notify = None
          skip_tags = os.environ.get('OS_ANSIBLE_SKIP_TAGS', 'config')
          skip_tags = skip_tags.split(',')
          if any([True for i in skip_tags if i in task.tags]):
              return
          else:
              return super(StrategyModule, self)._queue_task(
                  host,
                  task,
                  task_vars,
                  play_context
              )
  
subject: Add a new strategy filtering tasks