.github: collect all the OTEL traces

Jaeger does not make it easy to dump all the collected trace spans from
all services at once. Switch to using the OpenTelemetry Collector with
the OTLP File exporter which writes the traces straight to disk in a
format that Jaeger UI can natively consume.

Signed-off-by: Cory Snider <csnider@mirantis.com>

.github/workflows/.windows.yml

@@ -274,14 +274,17 @@ jobs:
           go-version: ${{ env.GO_VERSION }}
           cache: false
       -
-        name: Set up Jaeger
+        name: Set up OpenTelemetry Collector
         run: |
-          # Jaeger is set up on Linux through the setup-tracing action. If you update Jaeger here, don't forget to
+          # The collectors is set up on Linux through the setup-tracing action. If you update the collector here, don't forget to
           # update the version set in .github/actions/setup-tracing/action.yml.
-          Invoke-WebRequest -Uri "https://github.com/jaegertracing/jaeger/releases/download/v1.46.0/jaeger-1.46.0-windows-amd64.tar.gz" -OutFile ".\jaeger-1.46.0-windows-amd64.tar.gz"
-          tar -zxvf ".\jaeger-1.46.0-windows-amd64.tar.gz"
-          Start-Process '.\jaeger-1.46.0-windows-amd64\jaeger-all-in-one.exe'
-          echo "OTEL_EXPORTER_OTLP_ENDPOINT=http://127.0.0.1:4318" | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf-8 -Append
+          New-Item -ItemType Directory -Force -Path bundles -ErrorAction Continue
+          Start-Process "msiexec" -ArgumentList "/i",
+              "https://github.com/open-telemetry/opentelemetry-collector-releases/releases/download/v0.140.0/otelcol_0.140.0_windows_x64.msi",
+              "/qn", "/l*v", "$(Join-Path (Get-Location) "bundles/otelcol-install.log")",
+              "COLLECTOR_SVC_ARGS=`"--config=`"`"file:$(Join-Path (Get-Location) "otelcol-ci-config.yml")`"`" --config=`"`"yaml:exporters::file::path: $(Join-Path (Get-Location) "bundles/otel-trace.jsonl")`"`"`"" `
+              -NoNewWindow -Wait
+          @("OTEL_EXPORTER_OTLP_ENDPOINT=http://127.0.0.1:4318", "OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf") | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf-8 -Append
         shell: pwsh
       -
         name: Env
@@ -296,7 +299,7 @@ jobs:
       -
         name: Init
         run: |
-          New-Item -ItemType "directory" -Path "bundles"
+          New-Item -ItemType "directory" -Path "bundles" -ErrorAction SilentlyContinue
           If ("${{ inputs.os }}" -eq "windows-2025") {
             echo "WINDOWS_BASE_IMAGE_TAG=${{ env.WINDOWS_BASE_TAG_2025 }}" | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf-8 -Append
           } ElseIf ("${{ inputs.os }}" -eq "windows-2022") {
@@ -342,14 +345,14 @@ jobs:
               "--exec-root=$env:TEMP\moby-exec", `
               "--pidfile=$env:TEMP\docker.pid", `
               "--register-service"
+          # Make the env-var visible to the service-managed dockerd, as there's no CLI flag for this option.
+          $dockerEnviron = @("DOCKER_MIN_API_VERSION=1.24")
+          $dockerEnviron += @(Get-Item Env:\OTEL_* | ForEach-Object { "$($_.Name)=$($_.Value)" })
           If ("${{ inputs.storage }}" -eq "graphdriver") {
-            # Make the env-var visible to the service-managed dockerd, as there's no CLI flag for this option.
-            & reg add "HKLM\SYSTEM\CurrentControlSet\Services\docker" /v Environment /t REG_MULTI_SZ /s '@' /d "DOCKER_MIN_API_VERSION=1.24@TEST_INTEGRATION_USE_GRAPHDRIVER=1"
+            $dockerEnviron += @("TEST_INTEGRATION_USE_GRAPHDRIVER=1")
             echo "TEST_INTEGRATION_USE_GRAPHDRIVER=1" | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf-8 -Append
-          } Else {
-            # Make the env-var visible to the service-managed dockerd, as there's no CLI flag for this option.
-            & reg add "HKLM\SYSTEM\CurrentControlSet\Services\docker" /v Environment /t REG_MULTI_SZ /s '@' /d DOCKER_MIN_API_VERSION=1.24
           }
+          New-ItemProperty -Name "Environment" -Path "HKLM:\SYSTEM\CurrentControlSet\Services\docker" -PropertyType MultiString -Value $dockerEnviron
           Write-Host "Starting service"
           Start-Service -Name docker
           Write-Host "Service started successfully!"
@@ -459,12 +462,10 @@ jobs:
               ForEach-Object {"$($_.TimeCreated.ToUniversalTime().ToString("o")) [$($_.LevelDisplayName)] $($_.Message)"} |
               Tee-Object -file ".\bundles\daemon.log"
       -
-        name: Download Jaeger traces
+        name: Stop OpenTelemetry Collector
         if: always()
         run: |
-          Invoke-WebRequest `
-            -Uri "http://127.0.0.1:16686/api/traces?service=integration-test-client" `
-            -OutFile ".\bundles\jaeger-trace.json"
+          (Stop-Service -DisplayName "OpenTelemetry Collector" -PassThru).WaitForStatus('Stopped', (New-TimeSpan -Seconds 30))
       -
         name: Upload reports
         if: always()