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##### SUMMARY
<!--- Explain the problem briefly below -->

`python-gitlab` library release a new version [v1.13.0](https://github.com/python-gitlab/python-gitlab/releases/tag/v1.13.0). User/Password authentication as been removed completely causing all Ansible GitLab module to fail... 

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->

gitlab_group
gitlab_deploy_key
gitlab_hook
gitlab_project
gitlab_project_variable
gitlab_runner
gitlab_user

##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
All versions

runner = self.findRunner(description)
        if runner:
            self.runnerObject = runner
            return True
        return False
    def deleteRunner(self):
        if self._module.check_mode:
            return True
        runner = self.runnerObject
        return runner.delete()
def main():
    argument_spec = basic_auth_argument_spec()
    argument_spec.update(dict(
        api_token=dict(type='str', no_log=True),
        description=dict(type='str', required=True, aliases=["name"]),
        active=dict(type='bool', default=True),
        tag_list=dict(type='list', default=[]),
        run_untagged=dict(type='bool', default=True),
        locked=dict(type='bool', default=False),
        access_level=dict(type='str', default='ref_protected', choices=["not_protected", "ref_protected"]),
        maximum_timeout=dict(type='int', default=3600),
        registration_token=dict(type='str', required=True),
        state=dict(type='str', default="present", choices=["absent", "present"]),
    ))
    module = AnsibleModule(
        argument_spec=argument_spec,
        mutually_exclusive=[
            ['api_username', 'api_token'],