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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

gitlab_password = module.params['api_password']
    gitlab_token = module.params['api_token']
    group_identifier = module.params['group']
    project_name = module.params['name']
    project_path = module.params['path']
    project_description = module.params['description']
    issues_enabled = module.params['issues_enabled']
    merge_requests_enabled = module.params['merge_requests_enabled']
    wiki_enabled = module.params['wiki_enabled']
    snippets_enabled = module.params['snippets_enabled']
    visibility = module.params['visibility']
    import_url = module.params['import_url']
    state = module.params['state']
    if not HAS_GITLAB_PACKAGE:
        module.fail_json(msg=missing_required_lib("python-gitlab"), exception=GITLAB_IMP_ERR)
    try:
        gitlab_instance = gitlab.Gitlab(url=gitlab_url, ssl_verify=validate_certs, email=gitlab_user, password=gitlab_password,
                                        private_token=gitlab_token, api_version=4)
        gitlab_instance.auth()
    except (gitlab.exceptions.GitlabAuthenticationError, gitlab.exceptions.GitlabGetError) as e:
        module.fail_json(msg="Failed to connect to GitLab server: %s" % to_native(e))
    except (gitlab.exceptions.GitlabHttpError) as e:
        module.fail_json(msg="Failed to connect to GitLab server: %s. \
            GitLab remove Session API now that private tokens are removed from user API endpoints since version 10.2." % to_native(e))
    
    if project_path is None:
        project_path = project_name.replace(" ", "_")
    gitlab_project = GitLabProject(module, gitlab_instance)
    if group_identifier:
        group = findGroup(gitlab_instance, group_identifier)