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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.
state = module.params['state']
    changed = False
    diff = None
    obj = list(ldap_search(
        '(&(objectClass=dNSZone)(zoneName={0})(relativeDomainName={1}))'.format(zone, name),
        attr=['dNSZone']
    ))
    exists = bool(len(obj))
    container = 'zoneName={0},cn=dns,{1}'.format(zone, base_dn())
    dn = 'relativeDomainName={0},{1}'.format(name, container)
    if state == 'present':
        try:
            if not exists:
                so = forward_zone.lookup(
                    config(),
                    uldap(),
                    '(zone={0})'.format(zone),
                    scope='domain',
                ) or reverse_zone.lookup(
                    config(),
                    uldap(),
                    '(zone={0})'.format(zone),
                    scope='domain',
                )
                obj = umc_module_for_add('dns/{0}'.format(type), container, superordinate=so[0])
            else:
                obj = umc_module_for_edit('dns/{0}'.format(type), dn)
            obj['name'] = name
            for k, v in data.items():
                obj[k] = v