enable pr builds

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>
Signed-off-by: Cody Belcher <cody.t.belcher@gmail.com>

.azure-pipelines.yml

@@ -1,7 +1,9 @@
 variables:
   YARN_CACHE_FOLDER: $(Pipeline.Workspace)/.yarn
   AZURE_CACHE_FOLDER: $(Pipeline.Workspace)/.azure-cache
-pr: none
+pr:
+  - master
+  - releases/*
 trigger:
   branches:
     include: