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##### SUMMARY
<!--- Explain the problem briefly below -->
vmware_guest throws error that vmdk already exists although it does not. It is created during running the module but somehow fails. 

pyvmomi-6.7.1.2018.12

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
vmware_guest

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
2.8.1
```

##### 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: Create new VM
  vmware_guest:
    hostname: "{{ vcenter_hostname }}"
    esxi_hostname: "{{ esxi_host }}"
    username: '{{domain_user}}'
    password: "{{ domain_user_password }}"
    validate_certs: False
    datacenter: TM
    name: "{{ vm_hostname }}"
    folder: "{{ vm_destination }}"      
    state: poweredon
    disk:
    - size_gb: '{{ disk_size }}'
      type: thin
      autoselect_datastore: True
    hardware:
      memory_mb: "{{ memory }}"
      num_cpus: "{{ cores }}"
      num_cpu_cores_per_socket: "{{ cores }}"
    networks:
    - name: LAN
      domain: "{{ domain }}"
      dns_servers:
      -  "{{ dns1 }}"
      -  "{{ dns2 }}"
      type: static
      ip: "{{ ip }}"
      netmask: 255.255.254.0
      gateway: 192.168.1.5
    customization:
      autologon: True
      hostname: "{{ vm_hostname }}"
      domain: "{{ domain }}"
      password: vagrant
      domainadmin: "{{ domain_user }}"
      domainadminpassword: "{{ domain_user_password }}"
      joindomain: "{{ domain }}"
      timezone: 105
      runonce:
      - powershell.exe -ExecutionPolicy Unrestricted -File C:\StartupScripts\ConfigureRemotingForAnsible.ps1 -ForceNewSSLCert -EnableCredSSP
      - powershell.exe -ExecutionPolicy Unrestricted -File C:\StartupScripts\DisableFirewall.ps1 
    wait_for_customization: yes
    template: "{{ vm_template }}"
    wait_for_ip_address: yes
```

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

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
Should just create the VM.

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

<!--- Paste verbatim command output between quotes -->
```paste below
Failed to create a virtual machine : Cannot complete the operation because the file or folder [EL02] ********/********.vmdk already exists"
```

task = None
        
        network_changes = False
        for nw in self.params['networks']:
            for key in nw:
                
                if key not in ('device_type', 'mac', 'name', 'vlan', 'type', 'start_connected'):
                    network_changes = True
                    break
        if len(self.params['customization']) > 1 or network_changes or self.params.get('customization_spec'):
            self.customize_vm(vm_obj=self.current_vm_obj)
        try:
            task = self.current_vm_obj.CustomizeVM_Task(self.customspec)
        except vim.fault.CustomizationFault as e:
            self.module.fail_json(msg="Failed to customization virtual machine due to CustomizationFault: %s" % to_native(e.msg))
        except vim.fault.RuntimeFault as e:
            self.module.fail_json(msg="failed to customization virtual machine due to RuntimeFault: %s" % to_native(e.msg))
        except Exception as e:
            self.module.fail_json(msg="failed to customization virtual machine due to fault: %s" % to_native(e.msg))
        self.wait_for_task(task)
        if task.info.state == 'error':
            return {'changed': self.change_applied, 'failed': True, 'msg': task.info.error.msg, 'op': 'customize_exist'}
        if self.params['wait_for_customization']:
            set_vm_power_state(self.content, self.current_vm_obj, 'poweredon', force=False)
            is_customization_ok = self.wait_for_customization(self.current_vm_obj)
            if not is_customization_ok:
                return {'changed': self.change_applied, 'failed': True, 'op': 'wait_for_customize_exist'}
        return {'changed': self.change_applied, 'failed': False}
    def wait_for_task(self, task, poll_interval=1):