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

```
lib/ansible/modules/source_control/gitlab_runner.py:291:4: 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_runner.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

changed = False
        for arg_key, arg_value in arguments.items():
            if arguments[arg_key] is not None:
                if getattr(user, arg_key) != arguments[arg_key]:
                    setattr(user, arg_key, arguments[arg_key])
                    changed = True
        return (changed, user)
    '''
    @param arguments User attributes
    '''
    def createUser(self, arguments):
        if self._module.check_mode:
            return True
        try:
            user = self._gitlab.users.create(arguments)
        except (gitlab.exceptions.GitlabCreateError) as e:
            self._module.fail_json(msg="Failed to create user: %s " % to_native(e))
        return user
    '''
    @param username Username of the user
    '''
    def findUser(self, username):
        users = self._gitlab.users.list(search=username)
        for user in users:
            if (user.username == username):
                return user
    '''
    @param username Username of the user
    '''
    def existsUser(self, username):