add vlan trunk support on vm create

[aapjeisbaas]

Support for vlan trunk.

I added both the api style notation and a user friendly version.

Api style:

      networks:
        - is_connected: True
          subnet:
            name: "{{ network_name }}"
          vlan_mode: "TRUNKED"
          trunked_vlan_list: [100, 200, 300, 400]

User friendly style (which overrides the api style:

      networks:
        - is_connected: True
          subnet:
            name: "{{ network_name }}"
          vlan_list: [100, 200, 300, 400]

[aapjeisbaas]

@bhati-pradeep Can you have a look if you can merge this?
It has been working fine in our automated build and deployment pipeline.

[aapjeisbaas]

#546

[bhati-pradeep]

@aapjeisbaas Thanks for raising PR. I will review it. Next release 2.0 is locked for any new items. Will track it under 1.9.3 release which will be for bug fixes and improvments

[bhati-pradeep]

There is already spec for networks in

nutanix.ansible/plugins/module_utils/prism/spec/vms.py

Line 21 in c7b791d

network_spec = dict(

Please update that existing spec instead of having it again here.
we import that here default_vm_spec = deepcopy(DefaultVMSpec.vm_argument_spec)