Documentation not clear for create_virtualmachine_with_subnet_in_different_resource_group

[zikalino]

This issue is for a: (mark with an x)

- [ ] bug report -> please search issues before submitting
- [ ] feature request
- [x] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

Try to use create_virtualmachine_with_subnet_in_different_resource_group sample

It's very unclear how it should be used and how to set up your Ansible environment so it runs correctly.
I figured out users should run Ansible on the VM that belongs to particular virtual network, and sample should create VM in the same VN. But it's not clear.

Any log messages given by the failure

no log

Expected/desired behavior

doc should be very clear about prerequisites

OS and Version?

Versions

2.7

Mention any other details that might be useful

---

Thanks! We'll be in touch soon.

[Fred-sun]

@zikalino