Move LDAP to PSR-4

apps/user_ldap/ajax/getConfiguration.php

apps/user_ldap/ajax/setConfiguration.php

apps/user_ldap/ajax/testConfiguration.php

apps/user_ldap/ajax/wizard.php

apps/user_ldap/appinfo/app.php

apps/user_ldap/appinfo/register_command.php

apps/user_ldap/lib/Command/Search.php

apps/user_ldap/lib/Command/TestConfig.php

apps/user_ldap/lib/Jobs/CleanUp.php

apps/user_ldap/lib/LDAP.php

apps/user_ldap/tests/access.php

apps/user_ldap/tests/integration/abstractintegrationtest.php

...user_ldap/tests/integration/exceptionOnLostConnection.php