Replace azuresdk-github-pat with GH_TOKEN in Azure pipeline YAML files (#43468)

* Replace azuresdk-github-pat with GH_TOKEN in scoped YAML files

Agent-Logs-Url: https://github.com/Azure/azure-rest-api-specs/sessions/d20ae825-bf04-497b-bbda-497c1f39b93d

Co-authored-by: chidozieononiwu <31145988+chidozieononiwu@users.noreply.github.com>

Spec change so PR pipelines are triggered

Update loging-to-github.yml call

Avoid login-to-github.yml on PR runs

* Move login-to-github after chekout step

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Chidozie Ononiwu <chononiw@microsoft.com>

Author: Copilot

eng/pipelines/swagger-api-doc-preview.yml

@@ -32,21 +32,24 @@ jobs:
         value: 'Swagger ApiDocPreview'
 
     steps:
+      - checkout: self
+        # Fetch depth required to get list of changed files
+        fetchDepth: 2
+        
+      - template: /eng/common/pipelines/templates/steps/login-to-github.yml
+
       - template: /eng/pipelines/templates/steps/set-sha-check.yml
         parameters:
           State: pending
           TargetUrl: $(CurrentBuildUrl)
           Description: 'Starting docs build'
           Context: $(StatusName)
-
-      - checkout: self
-        # Fetch depth required to get list of changed files
-        fetchDepth: 2
+          GitHubToken: $(GH_TOKEN)
 
       - template: /eng/common/pipelines/templates/steps/sparse-checkout.yml
         parameters:
           SkipCheckoutNone: true
-          TokenToUseForAuth: $(azuresdk-github-pat)
+          TokenToUseForAuth: $(GH_TOKEN)
           # Path does not need to be set because sparse-checkout.yml already
           # checks out files in the repo root
           Repositories:

eng/pipelines/templates/steps/set-sha-check.yml

@@ -42,9 +42,12 @@ parameters:
 
   - name: GitHubToken
     type: string
-    default: $(azuresdk-github-pat)
+    default: ''
 
 steps:
+  - ${{ if eq(parameters.GitHubToken, '') }}:
+    - template: /eng/common/pipelines/templates/steps/login-to-github.yml
+
   - bash: |
       echo "Repository Name: ${{ parameters.RepositoryName }}"
       echo "Commit ID: ${{ parameters.Sha }}"
@@ -61,4 +64,4 @@ steps:
     displayName: ${{ parameters.DisplayName }}
     condition: ${{ parameters.Condition }}
     env:
-      GH_TOKEN: ${{ parameters.GitHubToken }}
+      GH_TOKEN: $(GH_TOKEN)