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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"
```

self.relospec.diskMoveType = vim.vm.RelocateSpec.DiskMoveOptions.createNewChildDiskBacking
                    else:
                        self.module.fail_json(msg="Parameter 'linked_src' and 'snapshot_src' are"
                                                  " required together for linked clone operation.")
                clonespec = vim.vm.CloneSpec(template=self.params['is_template'], location=self.relospec)
                if self.customspec:
                    clonespec.customization = self.customspec
                if snapshot_src is not None:
                    if vm_obj.snapshot is None:
                        self.module.fail_json(msg="No snapshots present for virtual machine or template [%(template)s]" % self.params)
                    snapshot = self.get_snapshots_by_name_recursively(snapshots=vm_obj.snapshot.rootSnapshotList,
                                                                      snapname=snapshot_src)
                    if len(snapshot) != 1:
                        self.module.fail_json(msg='virtual machine "%(template)s" does not contain'
                                                  ' snapshot named "%(snapshot_src)s"' % self.params)
                    clonespec.snapshot = snapshot[0].snapshot
                clonespec.config = self.configspec
                clone_method = 'Clone'
                try:
                    task = vm_obj.Clone(folder=destfolder, name=self.params['name'], spec=clonespec)
                except vim.fault.NoPermission as e:
                    self.module.fail_json(msg="Failed to clone virtual machine %s to folder %s "
                                              "due to permission issue: %s" % (self.params['name'],
                                                                               destfolder,
                                                                               to_native(e.msg)))
                self.change_detected = True
            else:
                
                self.configspec.name = self.params['name']
                self.configspec.files = vim.vm.FileInfo(logDirectory=None,