To reproduce:
* Open attached project
* Inspect Assets\Plugins\Android\mainTemplate.gradle and Assets\Plugins\Android\settingsTemplate.gradle and notice where **DIR_UNITYPROJECT** is located
* Export gradle project, inspect:
** settings.gradle -> **DIR_UNITYPROJECT** was resolved incorrectly into empty string
** unityLibrary\build.gradle -> **DIR_UNITYPROJECT** was resolved into project path as expected.

This bug will affect Google's ED4MU, since it will need to use **DIR_UNITYPROJECT* in settingsTemplate.gradle, thus it's important to have it fixed