[d16-9] [CI][VSTS] Use the creds store in git for https. (#10536)

tools/devops/automation/templates/build/build.yml

@@ -28,6 +28,12 @@ steps:
 - checkout: release-scripts
   clean: true
 
+- pwsh: |
+    rm -Rf "$HOME\.git-credentials"
+    git config --global credential.helper store
+    Set-Content -Path "$HOME\.git-credentials" -Value "https://$(GitHub.Token):x-oauth-basic@github.com`n" -NoNewline
+  displayName: 'Add git creds store'
+
 - powershell: |
     gci env: | format-table -autosize -wrap
   displayName: 'Dump Environment'
@@ -473,3 +479,8 @@ steps:
     artifactName: HtmlReport-sim
   continueOnError: true
   condition: and(succeededOrFailed(), contains(variables['runTests.TESTS_RAN'], 'True')) # if tests did not run, there is nothing to do
+
+- pwsh: |
+    rm -Rf "$HOME\.git-credentials"
+  displayName: 'Remove git creds store'
+  condition: always()