v2 ci: speed up some of powershell's processes (#2818)

* v2: speed up some of powershell's processes

* v2-ci: downloading latest Go on Windows isn't slow anymore, so update the log message accordingly

* v2: CI: use 7z on Windows instead of Expand-Archive

azure-pipelines.yml

@@ -56,11 +56,14 @@ steps:
   condition: eq( variables['Agent.OS'], 'Darwin' )
   displayName: Install Go on macOS
 
+# The low performance is partly due to PowerShell's attempt to update the progress bar. Disabling it speeds up the process.
+# Reference: https://github.com/PowerShell/PowerShell/issues/2138
 - powershell: |
-    Write-Host "Downloading Go... (please be patient, I am very slow)"
+    $ProgressPreference = 'SilentlyContinue'
+    Write-Host "Downloading Go..."
     (New-Object System.Net.WebClient).DownloadFile("https://dl.google.com/go/$(LATEST_GO).windows-amd64.zip", "$(LATEST_GO).windows-amd64.zip")
     Write-Host "Extracting Go... (I'm slow too)"
-    Expand-Archive "$(LATEST_GO).windows-amd64.zip" -DestinationPath "$(gorootDir)"
+    7z x "$(LATEST_GO).windows-amd64.zip" -o"$(gorootDir)"
   condition: eq( variables['Agent.OS'], 'Windows_NT' )
   displayName: Install Go on Windows
 
@@ -88,8 +91,8 @@ steps:
   workingDirectory: '$(modulePath)'
   displayName: Get dependencies
 
+# its behavior is governed by .golangci.yml
 - script: |
-    # its behavior is governed by .golangci.yml
     (golangci-lint run --out-format junit-xml) > test-results/lint-result.xml
     exit 0
   workingDirectory: '$(modulePath)'