##### SUMMARY
The vmware_vm_inventory plugin cannot verify the inventory file when being loaded via the auto plugin

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
lib/ansible/plugins/inventory/vmware_vm_inventory.py

##### ANSIBLE VERSION
```paste below
ansible 2.8.1
  config file = None
  configured module search path = ['/Users/wtome/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/Cellar/ansible/2.8.1_1/libexec/lib/python3.7/site-packages/ansible
  executable location = /usr/local/bin/ansible
  python version = 3.7.4 (default, Sep  7 2019, 18:27:02) [Clang 10.0.1 (clang-1001.0.46.4)]
```

##### CONFIGURATION
```paste below

```

##### OS / ENVIRONMENT
MacOS 10.14.6


##### STEPS TO REPRODUCE
vmware_vm_inventory.yaml
```yaml
---
plugin: vmware_vm_inventory
strict: True
```

##### EXPECTED RESULTS
Inventory should be parsed from vCenter

##### ACTUAL RESULTS
```paste below
ansible-inventory -i vmware_vm_inventory.yaml --playbook-dir=. --list
 [WARNING]:  * Failed to parse /Users/wtome/ansible-
inventory/tests/vmware_vm_inventory.yaml with auto plugin: inventory config
'/Users/wtome/ansible-
inventory/tests/vmware_vm_inventory.yaml' could not be verified by plugin
'vmware_vm_inventory'
```

"""
        Look up a Managed Object Reference in vCenter / ESXi Environment
        :param vim_type: Type of vim object e.g, for datacenter - vim.Datacenter
        :param properties: List of properties related to vim object e.g. Name
        :return: local content object
        """
        
        root_folder = self.content.rootFolder
        if properties is None:
            properties = ['name']
        
        mor = self.content.viewManager.CreateContainerView(root_folder, [vim_type], True)
        
        traversal_spec = vmodl.query.PropertyCollector.TraversalSpec(
            name="traversal_spec",
            path='view',
            skip=False,
            type=vim.view.ContainerView
        )