<!--- 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 -->
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

```

elif isinstance(self.cache.get_network(network_name), vim.OpaqueNetwork):
                
                nic.device.backing = vim.vm.device.VirtualEthernetCard.OpaqueNetworkBackingInfo()
                network_id = self.cache.get_network(network_name).summary.opaqueNetworkId
                nic.device.backing.opaqueNetworkType = 'nsx.LogicalSwitch'
                nic.device.backing.opaqueNetworkId = network_id
                nic.device.deviceInfo.summary = 'nsx.LogicalSwitch: %s' % network_id
                nic_change_detected = True
            else:
                
                if not isinstance(nic.device.backing, vim.vm.device.VirtualEthernetCard.NetworkBackingInfo):
                    nic.device.backing = vim.vm.device.VirtualEthernetCard.NetworkBackingInfo()
                    nic_change_detected = True
                net_obj = self.cache.get_network(network_name)
                if nic.device.backing.network != net_obj:
                    nic.device.backing.network = net_obj
                    nic_change_detected = True
                if nic.device.backing.deviceName != network_name:
                    nic.device.backing.deviceName = network_name
                    nic_change_detected = True
            if nic_change_detected:
                
                
                
                if isinstance(self.cache.get_network(network_name), vim.OpaqueNetwork):
                    self.relospec.deviceChange.append(nic)
                else:
                    self.configspec.deviceChange.append(nic)
                self.change_detected = True
    def configure_vapp_properties(self, vm_obj):