fix: quickstart env variables

Author: jinseopkim0

ci/kokoro/windows/builds/bazel.ps1

@@ -62,19 +62,19 @@ if ($LastExitCode) {
 . ci/kokoro/windows/lib/integration.ps1
 
 function Invoke-REST-Quickstart {
-    bazelisk $common_flags run $build_flags `
-      //google/cloud/storage/quickstart:quickstart -- `
-      "${env:GOOGLE_CLOUD_CPP_STORAGE_TEST_BUCKET_NAME}"
+    $cmd = "bazelisk $common_flags run $build_flags --test_env=CURL_CA_BUNDLE --test_env=GOOGLE_APPLICATION_CREDENTIALS //google/cloud/storage/quickstart:quickstart -- '${env:GOOGLE_CLOUD_CPP_STORAGE_TEST_BUCKET_NAME}'"
+    Write-Host "Running REST Quickstart: $cmd"
+    Invoke-Expression $cmd
     if ($LastExitCode) {
         Write-Host -ForegroundColor Red "bazel run (storage/quickstart) failed with exit code ${LastExitCode}."
         Exit ${LastExitCode}
     }
 }
 
 function Invoke-gRPC-Quickstart {
-    bazelisk $common_flags run $build_flags `
-      //google/cloud/pubsub/quickstart:quickstart -- `
-      "${env:GOOGLE_CLOUD_PROJECT}" "${env:GOOGLE_CLOUD_CPP_PUBSUB_TEST_QUICKSTART_TOPIC}"
+    $cmd = "bazelisk $common_flags run $build_flags --test_env=GRPC_DEFAULT_SSL_ROOTS_FILE_PATH --test_env=GOOGLE_APPLICATION_CREDENTIALS //google/cloud/pubsub/quickstart:quickstart -- '${env:GOOGLE_CLOUD_PROJECT}' '${env:GOOGLE_CLOUD_CPP_PUBSUB_TEST_QUICKSTART_TOPIC}'"
+    Write-Host "Running gRPC Quickstart: $cmd"
+    Invoke-Expression $cmd
     if ($LastExitCode) {
         Write-Host -ForegroundColor Red "bazel run (pubsub/quickstart) failed with exit code ${LastExitCode}."
         Exit ${LastExitCode}
@@ -84,8 +84,14 @@ function Invoke-gRPC-Quickstart {
 if (Test-Integration-Enabled) {
     Write-Host "`n$(Get-Date -Format o) Running minimal quickstart prorams"
     Install-Roots-Pem
-    ${env:GRPC_DEFAULT_SSL_ROOTS_FILE_PATH}="${env:KOKORO_GFILE_DIR}/roots.pem"
-    ${env:GOOGLE_APPLICATION_CREDENTIALS}="${env:KOKORO_GFILE_DIR}/kokoro-run-key.json"
+    $env:GRPC_DEFAULT_SSL_ROOTS_FILE_PATH = "$env:KOKORO_GFILE_DIR/roots.pem"
+    $env:CURL_CA_BUNDLE = "$env:KOKORO_GFILE_DIR/roots.pem"
+    $env:GOOGLE_APPLICATION_CREDENTIALS = "$env:KOKORO_GFILE_DIR/kokoro-run-key.json"
+    # Troubleshooting output
+    Write-Host "GOOGLE_APPLICATION_CREDENTIALS=$env:GOOGLE_APPLICATION_CREDENTIALS"
+    Write-Host "GRPC_DEFAULT_SSL_ROOTS_FILE_PATH=$env:GRPC_DEFAULT_SSL_ROOTS_FILE_PATH"
+    Write-Host "CURL_CA_BUNDLE=$env:CURL_CA_BUNDLE"
+    Get-Content "$env:KOKORO_GFILE_DIR/roots.pem" -TotalCount 5
     Invoke-REST-Quickstart
     Invoke-gRPC-Quickstart
 }