##### SUMMARY
gitlab_group contains call to Display.deprecated or AnsibleModule.deprecate and is scheduled for removal

```
lib/ansible/modules/source_control/gitlab_group.py:273:4: ansible-deprecated-version: Deprecated version ('2.10') found in call to Display.deprecated or AnsibleModule.deprecate
```

##### ISSUE TYPE
 - Bug Report

##### COMPONENT NAME
```
lib/ansible/modules/source_control/gitlab_group.py
```

##### ANSIBLE VERSION
```
2.10
```

##### CONFIGURATION
N/A

##### OS / ENVIRONMENT
N/A

##### STEPS TO REPRODUCE
N/A

##### EXPECTED RESULTS
N/A

##### ACTUAL RESULTS
N/A

if not self.sshKeyExists(user, sshkey['name']):
            if self._module.check_mode:
                return True
            try:
                user.keys.create({
                    'title': sshkey['name'],
                    'key': sshkey['file']})
            except gitlab.exceptions.GitlabCreateError as e:
                self._module.fail_json(msg="Failed to assign sshkey to user: %s" % to_native(e))
            return True
        return False
    '''
    @param group Group object
    @param user_id Id of the user to find
    '''
    def findMember(self, group, user_id):