development: Fix exposing otel collector OTLP endpoints (#9197)

To allow connecting to the collector from outside docker network.
Not sure when this was changed, but latest docs include this:
https://opentelemetry.io/docs/collector/configuration/#basics

Discover while testing #9172

Signed-off-by: György Krajcsovits <[email protected]>

Author: krajorama

development/mimir-monolithic-mode/config/otel-collector-otlp-push-config.yaml

@@ -4,7 +4,9 @@ receivers:
   otlp: # Allow sending data via OTLP protocol
     protocols:
       grpc:
+        endpoint: 0.0.0.0:4317
       http:
+        endpoint: 0.0.0.0:4318
 
   # Data sources: metrics
   prometheus: # Scrape self

development/mimir-monolithic-mode/config/otel-collector-remote-write-config.yaml

@@ -4,7 +4,9 @@ receivers:
   otlp: # Allow sending data via OTLP protocol
     protocols:
       grpc:
+        endpoint: 0.0.0.0:4317
       http:
+        endpoint: 0.0.0.0:4318
 
   # Data sources: metrics
   prometheus: # Scrape self