Update PR validation to run a real build

.azure/pipelines/fast-pr-validation.yml

@@ -3,28 +3,17 @@ trigger:
 - release/*
 
 jobs:
-- template: project-ci.yml
+- template: jobs/default-build.yml
   parameters:
-    buildArgs: "/t:FastCheck"
-- job: RepoBuilds
-  pool:
-    vmImage: vs2017-win2016
-  strategy:
-    maxParallel: 3
-    matrix:
-      DataProtection:
-        _FolderName: DataProtection
-      WebSockets:
-        _FolderName: WebSockets
-  steps:
-  - script: src/$(_FolderName)/build.cmd -ci
-    displayName: Run src/$(_FolderName)/build.cmd
-  - task: PublishTestResults@2
-    displayName: Publish test results
-    condition: always()
-    inputs:
-      testRunner: vstest
-      testResultsFiles: 'src/$(_FolderName)/artifacts/logs/**/*.trx'
+    jobName: PR_FastCheck
+    jobDisplayName: Fast Check
+    agentOs: Windows
+    buildArgs: "/p:FastCheck"
+- template: jobs/default-build.yml
+  parameters:
+    jobName: Windows_Build
+    jobDisplayName: "Build: Windows"
+    agentOs: Windows
 - template: jobs/iisintegration-job.yml
   parameters:
     variables: