<!--- Verify first that your issue is not already reported on GitHub -->
<!--- Also test if the latest release and devel branch are affected too -->
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##### SUMMARY
<!--- Explain the problem briefly below -->
vmware_guest handles 'version' parameter type error. 
##### 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 = None
  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /root/ansible/lib/ansible
  executable location = /root/ansible/bin/ansible
  python version = 2.7.15+ (default, Oct  7 2019, 17:39:04) [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. -->


##### STEPS TO REPRODUCE
<!--- Describe exactly how to reproduce the problem, using a minimal test-case -->
Using vmware_guest to deploy a new VM with 'version' parameter set to integer 14.
Return error 'int' object has no attribute 'lower'.
This is caused in line 1285:
"if temp_version.lower() == 'latest':"
<!--- 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 -->


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

<!--- Paste verbatim command output between quotes -->
```paste below

```

disk_type = expected_disk_spec.get('type', '').lower()
                if disk_type == 'thin':
                    diskspec.device.backing.thinProvisioned = True
                elif disk_type == 'eagerzeroedthick':
                    diskspec.device.backing.eagerlyScrub = True
            if 'filename' in expected_disk_spec and expected_disk_spec['filename'] is not None:
                self.add_existing_vmdk(vm_obj, expected_disk_spec, diskspec, scsi_ctl)
                continue
            elif vm_obj is None or self.params['template']:
                
                
                if diskspec.device.backing.fileName == '':
                    diskspec.fileOperation = vim.vm.device.VirtualDeviceSpec.FileOperation.create
            
            if expected_disk_spec.get('datastore'):
                
                
                
                pass
            kb = self.get_configured_disk_size(expected_disk_spec)
            
            if kb < diskspec.device.capacityInKB:
                self.module.fail_json(
                    msg="Given disk size is smaller than found (%d < %d). Reducing disks is not allowed." %
                        (kb, diskspec.device.capacityInKB))
            if kb != diskspec.device.capacityInKB or disk_modified:
                diskspec.device.capacityInKB = kb
                self.configspec.deviceChange.append(diskspec)
                self.change_detected = True
    def select_host(self):