<!--- 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

```

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##### 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

```

is_property_changed = True
                    else:
                        
                        new_vapp_property_spec.operation = 'edit'
                        new_vapp_property_spec.info = vapp_properties_current[property_id]
                        try:
                            for property_name, property_value in property_spec.items():
                                if property_name == 'operation':
                                    
                                    
                                    continue
                                
                                if getattr(new_vapp_property_spec.info, property_name) != property_value:
                                    setattr(new_vapp_property_spec.info, property_name, property_value)
                                    is_property_changed = True
                        except Exception as e:
                            msg = "Failed to set vApp property field='%s' and value='%s'. Error: %s" % (property_name, property_value, to_text(e))
                            self.module.fail_json(msg=msg)
                else:
                    if property_spec.get('operation') == 'remove':
                        
                        continue
                    
                    new_vapp_property_spec.operation = 'add'
                    property_info = vim.vApp.PropertyInfo()
                    property_info.classId = property_spec.get('classId')
                    property_info.instanceId = property_spec.get('instanceId')
                    property_info.id = property_spec.get('id')
                    property_info.category = property_spec.get('category')
                    property_info.label = property_spec.get('label')