Tidy up vcloud-query options.
Tidy up vcloud-query options.

- `vcloud-query --no_power_on` seems unlikely
- move uninteresting arguments to the end
- clarify usage without a type argument (result is exactly those object
  types available to the caller and may not be all possible types)

UKHomeOffice/vcloud-launcher,UKHomeOffice/vcloud-launcher,gds-operations/vcloud-launcher,gds-operations/vcloud-launcher,gds-operations/vcloud-launcher,UKHomeOffice/vcloud-launcher