Add timeout to feed fetch request

[eciavatta]

When the threats watcher cron runs it first download the contents of the feeds for each rss. The routine that download each feed is sequential. This is a problem when the connection used to download a feed hangs, because it blocks the entire process indefinitely.

To fix this, I added a 60 second timeout for each request.

[Felix83000]

Thanks. You are right.

Merging your idea.