Consider increasing the default timeout for _bulk to 330s #46830
Description
The Elastic cloud proxy has a 320s timeout. Our current default network timeout to _bulk is 90s. This means there are long running requests that Elasticsearch could plausibly complete in >90s that we give up on and then retry unnecessarily.
At the same time, a longer default timeout will possibly be incompatible with non-Elastic network middleware like on premise proxies or firewalls with shorter connection timeouts than this.