Sink options have been refactored

In our preparation for 1.0 we took time to organize and cleanup our request-based sink options. The specific changes include:

1. request_* options have been moved under a request table.
2. retry_backoff_secs must also be replaced with two new fields retry_initial_backoff_secs and retry_max_duration_secs.
3. batch_* options have been moved under a batch table.
4. batch_size has been replaced with either batch.max_events or batch.max_size in order to clarify its purpose (capping discrete events or bytes respectively).
5. basic_auth fields have been moved to a general purpose auth table complemented with a strategy field.

These changes effect the following sinks:

• aws_cloudwatch_logs
• aws_kinesis_firehose
• aws_kinesis_streams
• aws_s3
• clickhouse
• datadog_metrics
• elasticsearch
• gcp_pubsub
• http
• new_relic_logs
• splunk_hec

Upgrade Guide

 [sinks.my_sink_id]
   type = "http"
   inputs = ["my-source-id"]
   uri = "https://10.22.212.22:9000/endpoint"

-  batch_size = 1049000
+  [sinks.my_sink_id.batch]
+    max_size = 1049000

-  [sinks.my_sink_id.basic_auth]
+  [sinks.my_sink_id.auth]
+    strategy = "basic"
     user = "${USERNAME_ENV_VAR}"
     password = "${PASSWORD_ENV_VAR}"

-  request_in_flight_limit = 5
-  request_retry_backoff_secs = 1
+  [sinks.my_sink_id.request]
+    in_flight_limit = 5
+    retry_initial_backoff_secs = 1
+    retry_max_duration_secs = 10