<!--- Verify first that your feature was not already discussed on GitHub -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
<!--- Describe the new feature/improvement briefly below -->
Now "vmware_host_facts" module returns the ESXi version and build number, no update version info, so request getting that info too.
References:
https://www.virtuallyghetto.com/2016/08/quick-tip-how-to-retrieve-the-esxi-update-level-using-the-vsphere-api.html
MOB path:
https://esxi_hostname/mob/?moid=ha-adv-options&doPath=setting%5b%22Misc.HostAgentUpdateLevel%22%5d




##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
vmware_host_facts
##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->
Some features of ESXi are introduced in specific ESXi update release, so it's better to get that info and use it as a condition before some tasks. 
<!--- Paste example playbooks or commands between quotes below -->
```yaml

```

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

sn = 'NA'
        for info in self.host.hardware.systemInfo.otherIdentifyingInfo:
            if info.identifierType.key == 'ServiceTag':
                sn = info.identifierValue
        facts = {
            'ansible_distribution': self.host.config.product.name,
            'ansible_distribution_version': self.host.config.product.version,
            'ansible_distribution_build': self.host.config.product.build,
            'ansible_os_type': self.host.config.product.osType,
            'ansible_system_vendor': self.host.hardware.systemInfo.vendor,
            'ansible_hostname': self.host.summary.config.name,
            'ansible_product_name': self.host.hardware.systemInfo.model,
            'ansible_product_serial': sn,
            'ansible_bios_date': self.host.hardware.biosInfo.releaseDate,
            'ansible_bios_version': self.host.hardware.biosInfo.biosVersion,
            'ansible_uptime': self.host.summary.quickStats.uptime,
            'ansible_in_maintenance_mode': self.host.runtime.inMaintenanceMode,
            'ansible_uuid': self.host.hardware.systemInfo.uuid,
        }
        return facts
    def properties_facts(self):