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.

We're also logging on all Http requests. This also changes it so we're only logging when Http requests fail.