SD-322  Store content from Ingest into the Content Archive

The worker is stateless(data is stored in mongo/elastic/redis) so it can be be started only one worker for testing purpose. Other solution is to set the flag true and in this case is not used the worker at all. Probably the flag can be set only for a few tests, by using a config decorator for behave test. I think we have to evaluate the options and do the required settings on travis/bamboo.