[ci]: Support azp for cisco 8000 (#8654)

Why I did it
Setup Azure pipeline for cisco 8000.

.azure-pipelines/azure-pipelines-image-template.yml

@@ -36,6 +36,7 @@ jobs:
         displayName: "Set cache options"
       - checkout: self
         submodules: recursive
+        condition: eq(variables.SKIP_CHECKOUT, '') 
         displayName: 'Checkout code'
       - script: |
           BRANCH_NAME=$(Build.SourceBranchName)

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

@@ -0,0 +1,64 @@
+# Starter pipeline
+# Start with a minimal pipeline that you can customize to build and deploy your code.
+# Add steps that build, run tests, deploy, and more:
+# https://aka.ms/yaml
+
+schedules:
+- cron: "0 8 * * *"
+  displayName: Daily midnight build
+  branches:
+    include:
+    - master
+    - 202012
+  always: true
+
+trigger: none
+pr: none
+
+resources:
+  repositories:
+  - repository: cisco-8000
+    type: github
+    name: Cisco-8000-sonic/platform-cisco-8000
+    endpoint: cisco-connection
+
+stages:
+- stage: Build
+  pool: sonic
+  variables:
+    CACHE_MODE: wcache
+    SKIP_CHECKOUT: true
+    TERM: ''
+
+  jobs:
+  - template: azure-pipelines-build.yml
+    parameters:
+      buildOptions: 'USERNAME=admin SONIC_BUILD_JOBS=$(nproc) ${{ variables.VERSION_CONTROL_OPTIONS }}'
+      preSteps:
+      - checkout: self
+        submodules: recursive
+        path: s
+        displayName: 'Checkout code'
+      - checkout: cisco-8000
+        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: $(cisco.ref)
+          itemPattern: 'artifactory-*.tar.gz'
+          downloadPath: '$(System.ArtifactsDirectory)'
+      - script: |
+          make PLATFORM=cisco-8000 platform/cisco-8000
+          tar xfz $(System.ArtifactsDirectory)/artifactory-*.tar.gz -C platform/cisco-8000
+        displayName: 'Setup cisco artifacts'
+      jobGroups:
+      - name: cisco-8000