Flower Http request timeouts

@Wikia/platform-team 
https://wikia-inc.atlassian.net/browse/PLATFORM-454

This change makes it so we only send task status events to Flower when a timing thereshhold is reached. I think part of the problem is we're sending a lot of unnecessary API requests to Flower, which it can't handle (we can't cluster Flower), so this should alleviate that.