Update InitProviderInterface to latest changes
Update InitProviderInterface to latest changes

* Module is now called ModuleManager
* Type hint to ModuleManagerInterface for init()
* Remove $manager assignment to null when no manager is given

zendframework/zend-modulemanager,Xerkus/zend-modulemanager,weierophinney/zend-modulemanager,MadCat34/zend-modulemanager