<!--- Verify first that your issue is not already reported on GitHub -->
<!--- Also test if the latest release and devel branch are affected too -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
<!--- Explain the problem briefly below -->
Customize Windows 10 guest OS with wait_for_customzation parameter set, but after many hours there is no return and the playbook just stuck there.
##### 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
ansible 2.10.0.dev0
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /root/.local/lib/python2.7/site-packages/ansible
  executable location = ./bin/ansible
  python version = 2.7.15+ (default, Jul  9 2019, 16:51:35) [GCC 7.4.0]
```

##### 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. -->
vSphere 6.7U3, Windows 10 guest OS 32bit with BIOS firmware

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

<!--- Paste example playbooks or commands between quotes below -->
```yaml

```

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

##### EXPECTED RESULTS
<!--- Describe what you expected to happen when running the steps above -->
If something wrong with the customization in guest OS, no event in VC, then wait_for_customization should return timeout error in a not very long time.

##### ACTUAL RESULTS
<!--- Describe what actually happened. If possible run with extra verbosity (-vvvv) -->
no timeout error return after more than 10 hours, just stuck there.
<!--- Paste verbatim command output between quotes -->
```paste below

```

""" This class is a helper to create easily VMware Objects for PyVmomiHelper """
    def __init__(self, module):
        self.module = module
        self.next_disk_unit_number = 0
        self.scsi_device_type = {
            'lsilogic': vim.vm.device.VirtualLsiLogicController,
            'paravirtual': vim.vm.device.ParaVirtualSCSIController,
            'buslogic': vim.vm.device.VirtualBusLogicController,
            'lsilogicsas': vim.vm.device.VirtualLsiLogicSASController,
        }
    def create_scsi_controller(self, scsi_type):
        scsi_ctl = vim.vm.device.VirtualDeviceSpec()
        scsi_ctl.operation = vim.vm.device.VirtualDeviceSpec.Operation.add
        scsi_device = self.scsi_device_type.get(scsi_type, vim.vm.device.ParaVirtualSCSIController)
        scsi_ctl.device = scsi_device()
        scsi_ctl.device.busNumber = 0
        
        
        scsi_ctl.device.key = -randint(1000, 9999)
        scsi_ctl.device.hotAddRemove = True
        scsi_ctl.device.sharedBus = 'noSharing'
        scsi_ctl.device.scsiCtlrUnitNumber = 7
        return scsi_ctl
    def is_scsi_controller(self, device):