Use PackageInfo.Name to populate the ArtifactPackageNames for PR Matrix Gen (Azure#44886)

Author: JimSuplizio

eng/pipelines/templates/jobs/ci.yml

@@ -451,8 +451,9 @@ jobs:
           - ${{ config }}
       ${{ if eq(parameters.ServiceDirectory, 'auto') }}:
         EnablePRGeneration: true
-        # Trying sparse matrix for indirect packages
         PRMatrixSparseIndirect: true
+        # This key will use the PackageInfo.Name to populate the ArtifactPackageNames
+        PRMatrixKey: 'Name'
         SparseCheckoutPaths:
           - '**/*.xml'
           - '**/*.md'