Setup unit tests for Enterprise. (#2984)

* Fix Analytics on Enterprise.

ci_scripts/ci_post_clone.sh

@@ -9,8 +9,7 @@ install_xcode_cloud_brew_dependencies
 if [ "$CI_WORKFLOW" = "Nightly" ]; then
     bundle exec fastlane config_nightly build_number:"$CI_BUILD_NUMBER"
 elif [ "$CI_WORKFLOW" = "Enterprise" ]; then
-    # Not sure what Xcode Cloud does, might need to also
-    # git submodule update --init --recursive
+    # Xcode Cloud automatically fetches the submodule.
     bundle exec fastlane config_enterprise
 else
     bundle exec fastlane config_production