Fixed failed UI tests

Fixed two repo_discovery tests: upated locator to select discovered URL
- `test_discover_repo_1`
- `test_discover_repo_2`

Fixed all org tests and blocked some tests with bz `1131469`
- `test_positive_create_4`
- `test_negative_create_3`

Fixed compute_resource tests
- `test_create_resource_2`
- `test_create_resource_negative_2`
- `test_create_resource_negative_1`

Blocked `test_delete_hostgroup` with bz ID

Fixed role test:
- `test_update_role_permission`

Fixed OS test:
- `test_positive_set_os_parameter_1`

Fixed settings param test:
- `test_positive_update_general_param_10`