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##### SUMMARY
udm_dns_record contains probably copy&paste info from udm_dns_zone module, see https://github.com/ansible/ansible/blob/devel/lib/ansible/modules/cloud/univention/udm_dns_record.py#L64 Thus it's confusing how to use it, if one uses 'udm_dns_zone' in her playbook it would fail because invalid values.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
udm_dns_record module

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
ansible 2.7.7
  config file = /home/jiri/awebsys/ansible/ansible.cfg
  configured module search path = ['/home/jiri/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.7.3 (default, Apr  3 2019, 05:39:12) [GCC 8.3.0]

```
##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->
```
$ ansible-doc udm_dns_record | sed -n '/^EXAMPLES/,$p'
EXAMPLES:

# Create a DNS record on a UCS
- udm_dns_zone:
    name: www
    zone: example.com
    type: host_record
    data:
      - a: 192.0.2.1


RETURN VALUES:
# 
```
##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
Should have valid example data.
diff = obj.diff()
            changed = obj.diff() != []
            if not module.check_mode:
                if not exists:
                    obj.create()
                else:
                    obj.modify()
        except Exception as e:
            module.fail_json(
                msg='Creating/editing dns entry {0} in {1} failed: {2}'.format(name, container, e)
            )
    if state == 'absent' and exists:
        try:
            obj = umc_module_for_edit('dns/{0}'.format(type), dn)
            if not module.check_mode:
                obj.remove()
            changed = True
        except Exception as e:
            module.fail_json(
                msg='Removing dns entry {0} in {1} failed: {2}'.format(name, container, e)
            )
    module.exit_json(
        changed=changed,
        name=name,
        diff=diff,
        container=container
    )
if __name__ == '__main__':
    main()