Simulator env var for iOS

Author: aurimasc

.yamato/upm-ci.yml

@@ -128,6 +128,8 @@ test_iOS_{{ editor.version }}:
     type: Unity::mobile::iPhone
     image: mobile/macos-10.13-testing:stable
     flavor: b1.medium
+  variables:
+    IOS_SIMULATOR_SDK: 1
   commands:
     - brew tap --force-auto-update unity/unity [email protected]:unity/homebrew-unity.git
     - brew install unity-config