Separate webpack step so we can see errors in logs (#671)

.azure-pipelines/main.yml

@@ -4,7 +4,7 @@ jobs:
     vmImage: VS2017-Win2016
   steps:
   - template: common/build.yml
-  - template: common/webpack-prod.yml # This is required since we're not running publish
+  - template: common/webpack-prod.yml
   - template: common/lint.yml
   - template: common/test.yml
 
@@ -13,6 +13,7 @@ jobs:
     vmImage: ubuntu-16.04
   steps:
   - template: common/build.yml
+  - template: common/webpack-prod.yml # This will also run during vsce package, but vscep pack doesn't show STDOUT so we won't see full errors there
   - template: common/publish-vsix.yml # Only publish vsix from linux build since we use this to release and want to stay consistent
   - template: common/lint.yml
   - template: linux/test-linux.yml
@@ -22,6 +23,6 @@ jobs:
     vmImage: macOS 10.13
   steps:
   - template: common/build.yml
-  # - template: common/webpack-prod.yml # This is required since we're not running publish
+  # - template: common/webpack-prod.yml
   - template: common/lint.yml
   # - template: macOs/test.yml