Fix CWAgent container insights

[Paamicky]

Description of the issue

While bringing OTEL Container Insights (OCI) into the CloudWatch Agent, several pieces of functionality present in the Helm implementation were dropped or omitted, leaving the agent-generated config diverged from the chart. Most notably: OCI logs were never delivered to CloudWatch Logs because the log-group/log-stream metadata was missing; cluster-scoped metrics (apiserver, kube-state-metrics) carried the scraper node's identity. Attributes limits of <150 guaranteed to the Zeus endpoint was broken as well as Batching.

Description of changes

Realigns the agent's OTEL Container Insights pipelines with the Helm implementation and fixes the dropped/omitted functionality:

• OCI logs delivery: route CI application/host logs through the shared logs pipeline, which supplies the log-group/log-stream metadata that was missing (logs now reach CloudWatch Logs), including host-log gating (host logs omit
  service.name/deployment.environment.name).
• schema_url reordering: move the schema_url clear into the shared metrics + logs pipelines (after the re-stamping
  resourcedetection/opentelemetry) and remove the redundant per-CI-pipeline clears.
• Cluster-metric identity suppression: for cluster-scoped metrics (apiserver, kube-state-metrics), suppress the scraper node's host.*, cloud.availability_zone, and ec2.tag.* so series stay stable across scraper reschedules.
• Attribute limit: add awsattributelimit (150-cap) on the shared metrics pipeline to stay under the CloudWatch OTLP backend limit.
• Batching: set the shared metrics batch to 1000/10s which affects all OTLP metrics
• resourcedetection: unify the CI resourcedetection definition (detectors: [eks, env, ec2], timeout: 2s) across pipelines.

All changes are gated to EKS OTEL Container Insights; ECS, host metrics, and non-CI pipelines are unaffected. Goldens regenerated.

License

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Tests

• Unit: go build ./... and go test ./translator/... pass (goldens updated); gofmt clean.
• End-to-end on EKS (cluster mcommey-otelci-final, agent built from this branch, deployed via operator):
• OCI logs now reach CloudWatch with the correct and verified attributes
• Cluster metrics (apiserver/KSM via Query Studio): no host., no cloud.availability_zone, no ec2.tag.; node metrics retain node identity.
• Metrics export cleanly

Requirements

1. Run make fmt and make fmt-sh
2. Run make lint

[github-actions]

Binary Size Report

linux/amd64

Binary	PR	vs main (9884add)	vs v1.300072.0
amazon-cloudwatch-agent	193.3 MB	${\color{red}▲}$ +4.1 KB (+0.0%)	${\color{red}▲}$ +4.1 KB (+0.0%)
amazon-cloudwatch-agent-config-wizard	2.0 MB	+0 B	+0 B
config-downloader	2.0 MB	+0 B	+0 B
config-translator	2.0 MB	+0 B	+0 B
start-amazon-cloudwatch-agent	2.5 MB	+0 B	+0 B
workload-discovery	3.0 MB	+0 B	+0 B
Total	204.9 MB	${\color{red}▲}$ +4.1 KB (+0.0%)	${\color{red}▲}$ +4.1 KB (+0.0%)

linux/amd64 amazon-cloudwatch-agent (last 9 main commits + this PR)

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      ab55b8d                     v1.30007PR0

linux/arm64

Binary	PR	vs main (9884add)	vs v1.300072.0
amazon-cloudwatch-agent	177.1 MB	+0 B	+0 B
amazon-cloudwatch-agent-config-wizard	2.0 MB	+0 B	+0 B
config-downloader	2.0 MB	+0 B	+0 B
config-translator	2.0 MB	+0 B	+0 B
start-amazon-cloudwatch-agent	2.4 MB	+0 B	+0 B
workload-discovery	2.9 MB	+0 B	+0 B
Total	188.4 MB	+0 B	+0 B

windows/amd64

Binary	PR	vs main (9884add)	vs v1.300072.0
amazon-cloudwatch-agent.exe	196.1 MB	${\color{red}▲}$ +8.7 KB (+0.0%)	${\color{red}▲}$ +8.7 KB (+0.0%)
amazon-cloudwatch-agent-config-wizard.exe	2.1 MB	+0 B	+0 B
config-downloader.exe	2.1 MB	+0 B	+0 B
config-translator.exe	2.1 MB	+0 B	+0 B
start-amazon-cloudwatch-agent.exe	2.3 MB	+0 B	+0 B
workload-discovery.exe	2.9 MB	+0 B	+0 B
Total	207.7 MB	${\color{red}▲}$ +8.7 KB (+0.0%)	${\color{red}▲}$ +8.7 KB (+0.0%)

Investigating size changes

Use go-size-analyzer to compare binaries:

GOEXPERIMENT=jsonv2 go install github.com/Zxilly/go-size-analyzer/cmd/gsa@latest
gsa diff --old <baseline-binary> --new <new-binary>