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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

description:
      - Private. Project access must be granted explicitly for each user.
      - Internal. The project can be cloned by any logged in user.
      - Public. The project can be cloned without any authentication.
    default: private
    type: str
    choices: ["private", "internal", "public"]
    aliases:
      - visibility_level
  import_url:
    description:
      - Git repository which will be imported into gitlab.
      - GitLab server needs read access to this git repository.
    required: false
    type: str
  state:
    description:
      - create or delete project.
      - Possible values are present and absent.
    default: present
    type: str
    choices: ["present", "absent"]
'''
EXAMPLES = '''
- name: Delete GitLab Project
  gitlab_project:
    api_url: https://gitlab.example.com/
    api_token: "{{ access_token }}"
    validate_certs: False
    name: my_first_project