Enable setting different timeouts for web vs workers

[miketheman]

As noted in #19325 (comment)

A request.opensearch request method is set up during request instantiation, and it picks up a configuration that is hard-coded to the same value for both web and worker instances.

warehouse/warehouse/search/__init__.py

Lines 68 to 120 in e1b0ab3

	def opensearch(request):
	client = request.registry["opensearch.client"]
	doc_types = request.registry.get("search.doc_types", set())
	index_name = request.registry["opensearch.index"]
	index = get_index(
	index_name,
	doc_types,
	using=client,
	shards=request.registry.get("opensearch.shards", 1),
	replicas=request.registry.get("opensearch.replicas", 0),
	)
	return index.search()
	def includeme(config):
	ratelimit_string = config.registry.settings.get("warehouse.search.ratelimit_string")
	config.register_service_factory(
	RateLimit(ratelimit_string), IRateLimiter, name="search"
	)
	p = parse_url(config.registry.settings["opensearch.url"])
	assert p.path, "The URL for the OpenSearch instance must include the index name."
	qs = urllib.parse.parse_qs(p.query)
	kwargs = {
	"hosts": [urllib.parse.urlunparse((p.scheme, p.netloc) + ("",) * 4)],
	"verify_certs": True,
	"ca_certs": certifi.where(),
	"timeout": 1,
	"retry_on_timeout": True,
	"serializer": opensearchpy.serializer.serializer,
	"max_retries": 1,
	}
	aws_auth = bool(qs.get("aws_auth", False))
	if aws_auth:
	aws_region = qs.get("region", ["us-east-1"])[0]
	kwargs["connection_class"] = opensearchpy.RequestsHttpConnection
	kwargs["http_auth"] = requests_aws4auth.AWS4Auth(
	config.registry.settings["aws.key_id"],
	config.registry.settings["aws.secret_key"],
	aws_region,
	"es",
	)
	config.registry["opensearch.client"] = opensearchpy.OpenSearch(**kwargs)
	config.registry["opensearch.index"] = p.path.strip("/")
	config.registry["opensearch.shards"] = int(qs.get("shards", ["1"])[0])
	config.registry["opensearch.replicas"] = int(qs.get("replicas", ["0"])[0])
	config.add_request_method(opensearch, name="opensearch", reify=True)
	from warehouse.search.tasks import reindex
	config.add_periodic_task(crontab(minute=0, hour=6), reindex)
	config.register_service_factory(SearchService.create_service, iface=ISearchService)

The desired outcome is to be able to express different timeout settings for web vs worker instances so that we can continue to have a "snappy" timeout for frontend and have longer timeouts for background worker processes that are less latency-sensitive.