Sparse-Checkout Entire Repo (#42793)

* add a sparse-checkout of the entire repo to any clones that may run on mac

Author: scbedd

eng/pipelines/templates/jobs/ci.tests.yml

@@ -82,6 +82,11 @@ jobs:
       value: ${{ parameters.InjectedPackages }}
 
     steps:
+    - template: /eng/common/pipelines/templates/steps/sparse-checkout.yml
+      parameters:
+        Paths:
+          - '**'
+
     - template: /eng/pipelines/templates/steps/download-package-artifacts.yml
 
     - template: /eng/pipelines/templates/steps/resolve-package-targeting.yml

eng/pipelines/templates/steps/build-package-artifacts.yml

@@ -25,6 +25,11 @@ parameters:
     default: []
 
 steps:
+  - template: /eng/common/pipelines/templates/steps/sparse-checkout.yml
+    parameters:
+      Paths:
+        - '**'
+
   - task: UsePythonVersion@0
     displayName: 'Use Python $(PythonVersion)'
     condition: and(succeeded(), or(eq(variables['ENABLE_EXTENSION_BUILD'], 'true'), eq('${{ parameters.ArtifactSuffix }}', 'linux')))