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##### SUMMARY
The documentation states the instance uuid is required for the uuid parameter but the hw product uuid is used instead. 

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
vmware_guest_network

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
ansible 2.9.0rc1.post0
  config file = None
  configured module search path = ['/home/pernst/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.6/site-packages/ansible
  executable location = /usr/local/bin/ansible
  python version = 3.6.8 (default, Aug  7 2019, 17:28:10) [GCC 4.8.5 20150623 (Red Hat 4.8.5-39)]
```

##### CONFIGURATION
<!--- Paste verbatim output from "ansible-config dump --only-changed" between quotes -->
```paste below

```

##### OS / ENVIRONMENT
<!--- Provide all relevant information below, e.g. target OS versions, network device firmware, etc. -->


##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->

<!--- Paste example playbooks or commands between quotes below -->
```yaml
- name: Configure virtual network cards
  vmware_guest_network:
    hostname: "{{ vsphere_host }}"
    username: "{{ vsphere_user }}"
    password: "{{ vsphere_pass }}"
    validate_certs: "{{ vsphere_validate_certs | default(true) }}"
    datacenter: "{{ vsphere_target_dc }}"
    uuid: "{{ vm_facts.instance.instance_uuid }}"
  register: vm_networks
  delegate_to: localhost
```

<!--- HINT: You can paste gist.github.com links for larger files -->

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->


##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->

<!--- Paste verbatim command output between quotes -->
```paste below
FAILED! => {"changed": false, "msg": "Unable to find the specified virtual machine using <UUID>
```

P.S.:  I suggest the same uuid handling as in vmware_guest with an additional use_instance_uuid parameter.

self.module.fail_json(msg="Network '%(name)s' does not exist." % network)
                elif 'vlan' in network:
                    objects = get_all_objs(self.content, [vim.dvs.DistributedVirtualPortgroup])
                    dvps = [x for x in objects if to_text(get_parent_datacenter(x).name) == to_text(self.params['datacenter'])]
                    for dvp in dvps:
                        if hasattr(dvp.config.defaultPortConfig, 'vlan') and \
                                isinstance(dvp.config.defaultPortConfig.vlan.vlanId, int) and \
                                str(dvp.config.defaultPortConfig.vlan.vlanId) == str(network['vlan']):
                            network['name'] = dvp.config.name
                            break
                        if 'dvswitch_name' in network and \
                                dvp.config.distributedVirtualSwitch.name == network['dvswitch_name'] and \
                                dvp.config.name == network['vlan']:
                            network['name'] = dvp.config.name
                            break
                        if dvp.config.name == network['vlan']:
                            network['name'] = dvp.config.name
                            break
                    else:
                        self.module.fail_json(msg="VLAN '%(vlan)s' does not exist." % network)
                if 'device_type' in network and network['device_type'] not in list(self.nic_device_type.keys()):
                    self.module.fail_json(msg="Device type specified '%s' is invalid. "
                                              "Valid types %s " % (network['device_type'], list(self.nic_device_type.keys())))
                if ('mac' in network and not is_mac(network['mac'])) or \
                        ('manual_mac' in network and not is_mac(network['manual_mac'])):
                    self.module.fail_json(msg="Device MAC address '%s' or manual set MAC address %s is invalid. "
                                              "Please provide correct MAC address." % (network['mac'], network['manual_mac']))
                network_list.append(network)
        return network_list
    def get_network_config_spec(self, vm_obj, network_list):