Updated release pipeline (#808)

Author: yaira2

builds/azure-pipelines.yml

@@ -1,5 +1,4 @@
-trigger:
-- master
+trigger: none
 pr: none
 
 pool:
@@ -36,10 +35,13 @@ steps:
     configuration: '$(buildConfiguration)'
     msbuildArguments: '/t:build;_GenerateAppxPackage /p:AppxBundlePlatforms="$(buildPlatform)" /p:AppxPackageDir="$(appxPackageDir)" /p:AppxBundle=Always /p:UapAppxPackageBuildMode=StoreUpload'
 
-- task: store-publish@0
+- task: store-flight@0
   inputs:
     serviceEndpoint: 'Files'
     appId: '9NGHP3DX8HDX'
+    flightName: 'Files UWP Fast Ring'
     packagePath: '$(appxPackageDir)\**\*.msixupload'
-    force: true
+    force: false
     skipPolling: false
+
+