ci: Basic Windows setup (envoyproxy#8208)

Signed-off-by: Lizan Zhou <[email protected]>

.azure-pipelines/windows.yml

@@ -0,0 +1,21 @@
+# Azure Pipelines
+# TODO(lizan): Consider rolling all presubmit jobs into one file.
+trigger:
+- master
+
+jobs:
+- job: Windows
+  timeoutInMinutes: 360
+  pool:
+    vmImage: 'windows-latest'
+
+  steps:
+  - powershell: |
+      .\ci\windows_ci_setup.ps1
+      Write-Host "##vso[task.prependpath]$env:TOOLS_BIN_DIR"
+    displayName: 'Install dependencies'
+    env:
+      TOOLS_BIN_DIR: $(Pipeline.Workspace)\bin
+
+  - powershell: .\ci\windows_ci_steps.ps1
+    displayName: 'Run Windows CI'

ci/windows_ci_setup.ps1

@@ -0,0 +1,8 @@
+# This file only installs dependencies needed in additio to Azure pipelines hosted image.
+# The list of installed software can be found at:
+# https://github.com/Microsoft/azure-pipelines-image-generation/blob/master/images/win/Vs2019-Server2019-Readme.md
+
+mkdir "$env:TOOLS_BIN_DIR"
+
+$wc = New-Object System.Net.WebClient
+$wc.DownloadFile("https://github.com/bazelbuild/bazelisk/releases/download/v1.0/bazelisk-windows-amd64.exe", "$env:TOOLS_BIN_DIR\bazel.exe")

ci/windows_ci_steps.ps1

@@ -0,0 +1 @@
+bazel --bazelrc=windows\.bazelrc test @envoy_api//test/build/...

windows/tools/bazel.rc → windows/.bazelrc

@@ -5,3 +5,5 @@ build --define hot_restart=disabled
 build --define tcmalloc=disabled
 # Build GRPC without c-ares support -- otherwise it will not link
 build --define grpc_no_ares=true
+build --features=compiler_param_file
+build --workspace_status_command="bash bazel/get_workspace_status"