Increase parallel jobs to 10

Author: seanlaw

azure-pipelines.yml

@@ -26,7 +26,7 @@ strategy:
  python37_macos:
  imageName: "macos-10.13"
  python.version: "3.7" 
- maxParallel: 3
+ maxParallel: 10
 
 pool:
  vmImage: $(imageName)