Fix issue with .NET pipeline preparation. (#838)

Co-authored-by: Mitch Denny <midenn@microsoft.com>

eng/common/pipelines/templates/steps/install-pipeline-generation.yml

@@ -2,10 +2,14 @@ parameters:
   ToolPath: $(Pipeline.Workspace)/pipeline-generator
 
 steps:
+  - script: >
+      mkdir $(Pipeline.Workspace)/pipeline-generator
+    displayName: Setup working directory for pipeline generator.
   - script: >
       dotnet tool install
       Azure.Sdk.Tools.PipelineGenerator
       --version 1.0.2-dev.20201020.1
       --add-source https://pkgs.dev.azure.com/azure-sdk/public/_packaging/azure-sdk/nuget/v3/index.json
       --tool-path ${{parameters.ToolPath}}
+    workingDirectory: $(Pipeline.Workspace)/pipeline-generator
     displayName: 'Install pipeline generator tool'

eng/common/pipelines/templates/steps/prepare-pipelines.yml

@@ -34,6 +34,7 @@ steps:
         --patvar PATVAR
         --debug
         ${{parameters.CIConventionOptions}}
+      displayName: Create CI pipelines for public repository
       env:
         PATVAR: $(azuresdk-azure-sdk-devops-pipeline-generation-pat)
     - script: >
@@ -51,6 +52,7 @@ steps:
         --patvar PATVAR
         --debug
         ${{parameters.UPConventionOptions}}
+      displayName: Create UP pipelines for public repository
       env:
         PATVAR: $(azuresdk-azure-sdk-devops-pipeline-generation-pat)
     - script: >
@@ -68,6 +70,7 @@ steps:
         --patvar PATVAR
         --debug
         ${{parameters.TestsConventionOptions}}
+      displayName: Create Live Test pipelines for public repository
       env:
         PATVAR: $(azuresdk-azure-sdk-devops-pipeline-generation-pat)
 
@@ -89,6 +92,7 @@ steps:
         --debug
         --no-schedule
         ${{parameters.CIConventionOptions}}
+      displayName: Create CI pipelines for private repository
       env:
         PATVAR: $(azuresdk-azure-sdk-devops-pipeline-generation-pat)
     - script: >
@@ -107,6 +111,7 @@ steps:
         --debug
         --no-schedule
         ${{parameters.UPConventionOptions}}
+      displayName: Create UP pipelines for private repository
       env:
         PATVAR: $(azuresdk-azure-sdk-devops-pipeline-generation-pat)
     - script: >
@@ -125,5 +130,6 @@ steps:
         --debug
         --no-schedule
         ${{parameters.TestsConventionOptions}}
+      displayName: Create Live Test pipelines for private repository
       env:
         PATVAR: $(azuresdk-azure-sdk-devops-pipeline-generation-pat)