19129 OTel: Add retry and sending queue config to otel-collector

CMK-31533

Change-Id: Ia5c9c214d75155065760416857fd132d865a93bf

Author: m3hransh

.werks/19129.md

@@ -0,0 +1,17 @@
+[//]: # (werk v3)
+# Increase OpenTelemetry Collector resilience towards metric backend outages
+
+key        | value
+---------- | ---
+date       | 2026-04-08T07:32:50.665911+00:00
+version    | 2.5.0b4
+class      | feature
+edition    | ultimate
+component  | omd
+level      | 1
+compatible | yes
+
+The OpenTelemetry Collector now uses a larger sending queue for the ClickHouse
+exporter, making it more resilient towards metric backend outages by buffering
+more data during temporary unavailability.
+