chore: update OpenTelemetry Collector to 0.94.0-sumo-2

[kasia-kujawa]

chore: update OpenTelemetry Collector to 0.94.0-sumo-2

Checklist

• Changelog updated or skip changelog label added
• Documentation updated
• Template tests added for new features
• Integration tests added or modified for major features

[swiatekm]

Metrics E2E tests fail because we have some new metrics. We should probably drop the buckets and keep the rest. Maybe it's fine to keep them all? Depends on how many timeseries this is in practice per Pod.

Logs E2E tests fail due to open-telemetry/opentelemetry-collector-contrib#30797 changing the behaviour of the recombine operator. This is more serious and can't easily be worked around.

[kasia-kujawa]

Note about new metrics exposed by otelcol from tests:

Test_Helm_Default_OT_NamespaceOverride/metrics/expected_metrics_are_present 2024-03-11T09:57:43Z retry.go:103
WaitUntilExpectedMetricsPresent() returned an error: found the following unexpected metrics: 
[otelcol_http_client_response_size
 otelcol_http_client_duration_count 
 otelcol_http_server_response_size 
 otelcol_http_client_request_size 
 otelcol_http_client_duration_bucket 
 otelcol_http_server_request_size 
 otelcol_http_client_duration_sum]. 
Sleeping for 3s and will try again.

[kasia-kujawa]

otelcol_http_client* metrics are exposed by logs and metrics collectors, in default configuration I see additional 20 times series for these metrics:

• otelcol_http_client_response_size
• otelcol_http_client_request_size
• otelcol_http_client_duration_count
• otelcol_http_client_duration_bucket
• otelcol_http_client_duration_sum

new otelcol_http_server* metrics are exposed by otelcol logs and otelcol metrics

• otelcol_http_server_request_size
• otelcol_http_server_response_size

@swiatekm-sumo in default configuration otelcol_http_server_duration_bucket metric is collected (accepted in tests ) so why not collect otelcol_http_client_duration_bucket? 🤔

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