Issue #1855792 by damiankloip: Move user test modules into tests/modules/ directory.

...m_phpass_params_test/UserCustomPhpassParamsTestBundle.php

...om_phpass_params_test/user_custom_phpass_params_test.info

..._phpass_params_test/user_custom_phpass_params_test.module

...les/user/tests/modules/user_form_test/user_form_test.info

...s/user/tests/modules/user_form_test/user_form_test.module

...ser_test_views/test_views/views.view.test_access_perm.yml

...ser_test_views/test_views/views.view.test_access_role.yml

..._test_views/test_views/views.view.test_groupwise_user.yml

.../views.view.test_plugin_argument_default_current_user.yml

.../user_test_views/test_views/views.view.test_user_name.yml

...st_views/test_views/views.view.test_user_relationship.yml

...st_views/test_views/views.view.test_user_uid_argument.yml

...est_views/views.view.test_view_argument_validate_user.yml

...t_views/views.view.test_views_handler_field_user_name.yml

...s/user/tests/modules/user_test_views/user_test_views.info

...user/tests/modules/user_test_views/user_test_views.module