Enable unity licensing server for macOS (#735)

* Remove arguments for license activation from build step

* Support Unity license server on macOS platform

* Prepare configuration file to appropriate path

* Use extended regular expression since mac uses BSD grep

* Store the exit code from license activation command

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Co-authored-by: Webber Takken <webber@takken.io>

dist/platforms/mac/steps/build.sh

@@ -149,8 +149,6 @@ echo ""
   $( [ "${MANUAL_EXIT}" == "true" ] || echo "-quit" ) \
   -batchmode \
   $( [ "${ENABLE_GPU}" == "true" ] || echo "-nographics" ) \
-  -username "$UNITY_EMAIL" \
-  -password "$UNITY_PASSWORD" \
   -customBuildName "$BUILD_NAME" \
   -projectPath "$UNITY_PROJECT_PATH" \
   $( [ -z "$BUILD_PROFILE" ] && echo "-buildTarget $BUILD_TARGET") \