renamed operatingsystems_controller_test

added assertion for updated path

medias_controller_test on green and renamed correctly

corrected typo

environments_controller_test on green

architectures_controller_test on green

refactored the auth_source_ldap test

added some more tests, but update is not passing.

a bit of refactoring

fixed all tests, but it seems not to be a show action, that test is commented.