##### SUMMARY
Some of the modules still return something in `ansible_facts`, even though the result in there is an empty list:
 - ~~`azure_rm_publicipaddress_info`~~
 - ~~`azure_rm_networkinterface_info`~~
 - `azure_rm_storageaccount_info`
 - `azure_rm_virtualmachineimage_info`
 - `azure_rm_virtualmachinescaleset_info`
 - `azure_rm_virtualnetwork_info`

Finally, `azure_rm_resourcegroup_info` always returns `ansible_facts` with content (which is also returned as non-`ansible_facts`).

When called as `_info` modules, these modules should not have anything in `ansible_facts` when returning.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
~~azure_rm_publicipaddress_info~~
~~azure_rm_networkinterface_info~~
azure_rm_resourcegroup_info
azure_rm_storageaccount_info
azure_rm_virtualmachineimage_info
azure_rm_virtualmachinescaleset_info
azure_rm_virtualnetwork_info

##### ANSIBLE VERSION
```paste below
2.9
```

is_old_facts = self.module._name == 'azure_rm_virtualnetwork_facts'
        if is_old_facts:
            self.module.deprecate("The 'azure_rm_virtualnetwork_facts' module has been renamed to 'azure_rm_virtualnetwork_info'", version='2.13')
        for key in self.module_arg_spec:
            setattr(self, key, kwargs[key])
        if self.name is not None:
            results = self.get_item()
        elif self.resource_group is not None:
            results = self.list_resource_group()
        else:
            results = self.list_items()
        if is_old_facts:
            self.results['ansible_facts']['azure_virtualnetworks'] = self.serialize(results)
        self.results['virtualnetworks'] = self.curated(results)
        return self.results
    def get_item(self):
        self.log('Get properties for {0}'.format(self.name))
        item = None
        results = []
        try:
            item = self.network_client.virtual_networks.get(self.resource_group, self.name)
        except CloudError:
            pass
        if item and self.has_tags(item.tags, self.tags):
            results = [item]
        return results
    def list_resource_group(self):