[ci]: Download artifact instead of using nfs storage (#6570)

I notice that I rerun a failed job (not the stages), the nfs store is already cleaned by previous failed jobs.

azure-pipelines.yml

@@ -81,9 +81,7 @@ stages:
         ENABLE_DOCKER_BASE_PULL=y make configure PLATFORM=vs
         trap "sudo rm -rf fsroot" EXIT
         make USERNAME=admin SONIC_BUILD_JOBS=$(nproc) $CACHE_OPTIONS \
-            target/docker-sonic-vs.gz target/sonic-vs.img.gz target/docker-ptf.gz && \
+            target/docker-sonic-vs.gz target/sonic-vs.img.gz target/docker-ptf.gz
-            sudo cp target/sonic-vs.img.gz /nfs/azpl/kvmimage/sonic-vs.$(Build.BuildNumber).img.gz && \
-            sudo cp target/docker-sonic-vs.gz /nfs/azpl/kvmimage/docker-sonic-vs.$(Build.BuildNumber).gz
       displayName: 'Build sonic image'
     - publish: $(System.DefaultWorkingDirectory)/
       artifact: sonic-buildimage.kvm
@@ -122,13 +120,18 @@ stages:
         runBranch: 'refs/heads/master'
       displayName: "Download sonic swss common deb packages"
 
+    - task: DownloadPipelineArtifact@2
+      inputs:
+        artifact: sonic-buildimage.kvm
+      displayName: "Download sonic-buildimage.kvm artifact"
+
     - script: |
+        set -x
         sudo dpkg -i --force-confask,confnew ../sonic-swss-common.amd64.ubuntu20_04/libswsscommon_1.0.0_amd64.deb
         sudo dpkg -i ../sonic-swss-common.amd64.ubuntu20_04/python3-swsscommon_1.0.0_amd64.deb
-        sudo docker load -i /nfs/azpl/kvmimage/docker-sonic-vs.$(Build.BuildNumber).gz
+        sudo docker load -i ../target/docker-sonic-vs.gz
         docker tag docker-sonic-vs:latest docker-sonic-vs:$(Build.BuildNumber)
         username=$(id -un)
-        set -x
 
         trap "docker ps; docker images; ip netns list; \
               docker rmi docker-sonic-vs:$(Build.BuildNumber); \
@@ -136,8 +139,7 @@ stages:
               sudo chown -R ${username}.${username} .; \
               sudo chown -R ${username}.${username} $(System.DefaultWorkingDirectory)" EXIT
         pushd platform/vs/tests
-        sudo py.test -v --junitxml=tr.xml --imgname=docker-sonic-vs:$(Build.BuildNumber) && \
+        sudo py.test -v --junitxml=tr.xml --imgname=docker-sonic-vs:$(Build.BuildNumber)
-            sudo rm /nfs/azpl/kvmimage/docker-sonic-vs.$(Build.BuildNumber).gz
       displayName: "Run vs tests"
 
     - task: PublishTestResults@2
@@ -149,9 +151,15 @@ stages:
     displayName: "kvmtest"
     timeoutInMinutes: 240
     steps:
+    - task: DownloadPipelineArtifact@2
+      inputs:
+        artifact: sonic-buildimage.kvm
+      displayName: "Download sonic-buildimage.kvm artifact"
+
     - script: |
+        set -x
         sudo mkdir -p /data/sonic-vm/images
-        sudo cp -v /nfs/azpl/kvmimage/sonic-vs.$(Build.BuildNumber).img.gz /data/sonic-vm/images/sonic-vs.img.gz
+        sudo cp -v ../target/sonic-vs.img.gz /data/sonic-vm/images/sonic-vs.img.gz
         sudo gzip -fd /data/sonic-vm/images/sonic-vs.img.gz
         username=$(id -un)
         sudo chown -R $username.$username /data/sonic-vm
@@ -193,8 +201,6 @@ stages:
 
             exit 2
         else
-            sudo rm /nfs/azpl/kvmimage/sonic-vs.$(Build.BuildNumber).img.gz
-
             cp -r /data/sonic-mgmt/tests/logs $(Build.ArtifactStagingDirectory)/
         fi
       displayName: "Run T0 tests"