Function to get newsfeed for a pipeline
		Args:
			pipeline_key	pipeline key
			detail_level 	arguments for req str ['ALL', 'CONDENSED']
			return 			list of feed dicts parse at your convenience

def get_pipeline_newsfeeds(self, pipeline_key, detail_level = None):
		'''Function to get newsfeed for a pipeline
		Args:
			pipeline_key	pipeline key
			detail_level 	arguments for req str ['ALL', 'CONDENSED']
			return 			list of feed dicts parse at your convenience
		'''
		uri = '/'.join([
						self.api_uri,
						self.pipelines_suffix,
						pipeline_key,
						self.newsfeed_suffix
						])
		return self._get_newsfeeds(uri, detail_level)