Read cisco release version from cisco-8000.ini

Author: xumia

.azure-pipelines/official-build-cisco-8000.yml

@@ -43,12 +43,17 @@ stages:
         submodules: recursive
         path: s/platform/cisco-8000
         displayName: 'Checkout cisco-8000'
+      - script: |
+          cisco_ref=(cat platform/checkout/cisco-8000.ini | grep '^ref=' | cut -d= -f2)
+          echo "The cisco 8000 release version is $cisco_ref"
+          echo "##vso[task.setvariable variable=cisco.ref]$cisco_ref"
+        displayName: 'Export cisco release version'
       - task: DownloadGitHubRelease@0
         inputs:
           connection: cisco-connection
           userRepository: Cisco-8000-sonic/platform-cisco-8000
           defaultVersionType: specificTag
-          version: 202012-v0.2
+          version: $(cisco.ref)
           itemPattern: 'artifactory-*.tar.gz'
           downloadPath: '$(System.ArtifactsDirectory)'
       - script: |