<!--- Verify first that your feature was not already discussed on GitHub -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### SUMMARY
<!--- Describe the new feature/improvement briefly below -->
Ansible by default only creates LUKS1 format devices. Considering LUKS2 extra features and age, I think it would be beneficial to allow users to create LUKS2 devices.

##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
luks_device

##### ADDITIONAL INFORMATION
<!--- Describe how the feature would be used, why it is needed and what it would solve -->
For reliability, one should use either disk UUID's or labels. UUID's are (in my opinion) a hassle when it comes to using them in Ansible.

Enter labels. Labels can be the same across multiple hosts, and will be tied to the right disk/partition, even if sda1 suddenly becomes sdb1 after some hardware reconfiguration.

Now, the LUKS1 format, which Ansible creates by default with the `luks_device` module, does not support labels... Support was added with LUKS2.

It should be noted that, from what I can see, the module *does already support removing keys from LUKS2 format devices*.

<!--- Paste example playbooks or commands between quotes below -->
```yaml
- name: create LUKS2 container
  luks_device:
    device: "/dev/loop0"
    state: "present"
    keyfile: "/vault/keyfile"
    format: luks2
```
remove_keyfile=dict(type='path'),
        force_remove_last_key=dict(type='bool', default=False),
        keysize=dict(type='int'),
        label=dict(type='str'),
        uuid=dict(type='str'),
    )
    
    result = dict(
        changed=False,
        name=None
    )
    module = AnsibleModule(argument_spec=module_args,
                           supports_check_mode=True)
    if module.params['device'] is not None:
        try:
            statinfo = os.stat(module.params['device'])
            mode = statinfo.st_mode
            if not stat.S_ISBLK(mode) and not stat.S_ISCHR(mode):
                raise Exception('{0} is not a device'.format(module.params['device']))
        except Exception as e:
            module.fail_json(msg=str(e))
    crypt = CryptHandler(module)
    conditions = ConditionsHandler(module, crypt)
    
    
    
    if conditions.luks_create():
        if not module.check_mode:
            try:
                crypt.run_luks_create(conditions.device,