Add WithOtlpExporter() to infrastructure resources in Boilerplate AppHost (#12336)

[yasmoradi]

closes #12336

Summary

Infrastructure resources in Boilerplate.Server.AppHost/Program.cs were missing .WithOtlpExporter(), so their telemetry (traces, metrics, logs) was not exported to the Aspire dashboard.

This PR adds .WithOtlpExporter() to:

• redis-cache and redis-persistent
• sqlserver (SqlServer)
• postgresserver (PostgreSQL)
• mysqlserver (MySQL)
• s3 (Minio)
• keycloak

Summary by CodeRabbit

• Chores
  • Enhanced infrastructure observability with OpenTelemetry OTLP exporting enabled for Redis caching, database services, object storage, and authentication components, providing improved system monitoring and visibility.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 830ee9fb-c28b-4859-976c-1b01e640dc84

📥 Commits

Reviewing files that changed from the base of the PR and between aa89337 and 5f5aa87.

📒 Files selected for processing (1)

• src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.AppHost/Program.cs

Knowledge base: Disabled due to Reviews -> Disable Knowledge Base setting

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Walkthrough

This PR enables OpenTelemetry OTLP exporting for infrastructure resources in the Aspire app host by adding .WithOtlpExporter() to Redis cache, persistent Redis, PostgreSQL, MySQL, S3/MinIO, and Keycloak service builders. SQL Server configuration is updated to include .WithDbGate(config => config.WithDataVolume()) alongside the new OTLP exporter method.

Changes

Infrastructure OTLP Exporting

Layer / File(s)	Summary
Compiler directive update src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.AppHost/Program.cs	Minor update to top-level compiler directive marker.
Cache infrastructure OTLP exporting src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.AppHost/Program.cs	.WithOtlpExporter() added to Redis cache and persistent Redis service chains to export telemetry to the Aspire dashboard.
Database infrastructure OTLP exporting and SQL Server gate config src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.AppHost/Program.cs	.WithOtlpExporter() added to SQL Server, PostgreSQL, and MySQL service builders; SQL Server configuration refactored to include .WithDbGate(config => config.WithDataVolume()) for data volume handling.
External services OTLP exporting src/Templates/Boilerplate/Bit.Boilerplate/src/Server/Boilerplate.Server.AppHost/Program.cs	.WithOtlpExporter() added to S3/MinIO and Keycloak service builders to enable observability data visibility in the dashboard.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 A rabbit hops through telemetry streams,
Adding exporters to infrastructure dreams,
Redis, databases, and services bright,
Now all talk to Aspire in OpenTel sight! ✨

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 12336

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