Merge pull request #846 from nextcloud/provisioning_api_ocs

apps/provisioning_api/appinfo/routes.php

apps/provisioning_api/lib/AppInfo/Application.php

apps/provisioning_api/lib/Controller/AppsController.php

apps/provisioning_api/lib/Controller/GroupsController.php

apps/provisioning_api/lib/Controller/UsersController.php

...ng_api/lib/Middleware/Exceptions/NotSubAdminException.php

...isioning_api/lib/Middleware/ProvisioningApiMiddleware.php

.../provisioning_api/tests/Controller/AppsControllerTest.php

...rovisioning_api/tests/Controller/GroupsControllerTest.php

...provisioning_api/tests/Controller/UsersControllerTest.php

build/integration/features/bootstrap/BasicStructure.php

build/integration/features/bootstrap/Provisioning.php

lib/private/AppFramework/DependencyInjection/DIContainer.php

lib/private/AppFramework/Middleware/OCSMiddleware.php

tests/lib/AppFramework/Middleware/OCSMiddlewareTest.php