Add pipeline configuration for cleaning up upstream branches

eng/common/scripts/Delete-Remote-Branches.ps1

@@ -0,0 +1,43 @@
+param(
+  $RepoOwner,
+  $RepoName,
+  $BranchPrefix,
+  $WorkingDirectory,
+  $AuthToken
+)
+
+. "${PSScriptRoot}\common.ps1"
+
+pushd $WorkingDirectory
+git clone https://github.com/$RepoOwner/$RepoName.git
+pushd $RepoName
+$syncBranches = git branch -r --list origin/$BranchPrefix* | % { $_ -replace "origin/", "" }
+
+LogDebug "Operating on Repo [ $RepoName ]"
+foreach ($branch in $syncBranches)
+{
+  try {
+    $branchName = $branch.Trim()
+    $head = "${RepoOwner}/${RepoName}:${branchName}"
+    LogDebug "Operating on branch [ $branchName ]"
+    $response = ListPullRequests -RepoOwner $RepoOwner -RepoName $RepoName -head $head
+  }
+  catch
+  {
+    LogError "ListPullRequests failed with exception:`n$_"
+    exit 1
+  }
+
+  if ($response.Count -eq 0)
+  {
+    LogDebug "Branch [ $branchName ] in repo [ $RepoName ] has no associated Pull Request. Deleting Branch"
+    git push origin --delete $branchName
+    if ($lastExitCode -ne 0) {
+      Write-Host "Failed to delete branch [ $branchName ] in repo [ $RepoName ]"
+      exit 1
+    }
+  }
+}
+
+popd
+popd

eng/pipelines/templates/jobs/tools-cleanup.yml

@@ -0,0 +1,32 @@
+parameters:
+- name: Repos
+  type: object
+  default:
+    - azure-sdk-for-android
+    - azure-sdk-for-c
+    - azure-sdk-for-cpp
+    - azure-sdk-for-go
+    - azure-sdk-for-ios
+    - azure-sdk-for-java
+    - azure-sdk-for-js
+    - azure-sdk-for-net
+    - azure-sdk-for-python
+
+jobs:
+  - job: CleanUp
+    pool:
+      vmImage: windows-2019
+    steps:
+      - ${{ each repo in parameters.Repos }}:
+        - task: PowerShell@2
+          displayName: Clean Up Sync Common Branches
+          condition: succeeded()
+          inputs:
+            pwsh: true
+            workingDirectory: $(System.DefaultWorkingDirectory)
+            filePath: $(System.DefaultWorkingDirectory)/eng/common/scripts/Delete-Remote-Branches.ps1
+            arguments: >
+              -RepoName ${{ repo }}
+              -BranchPrefix "sync-eng/common-"
+              -WorkingDirectory $(System.DefaultWorkingDirectory)
+              -AuthToken $(azuresdk-github-pat)