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<!--- Also test if the latest release and devel branch are affected too -->
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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

- name: "Adding a project hook"
  gitlab_hook:
    api_url: https://gitlab.example.com/
    api_token: "{{ access_token }}"
    project: "my_group/my_project"
    hook_url: "https://my-ci-server.example.com/gitlab-hook"
    state: present
    push_events: yes
    tag_push_events: yes
    hook_validate_certs: no
    token: "my-super-secret-token-that-my-ci-server-will-check"
- name: "Delete the previous hook"
  gitlab_hook:
    api_url: https://gitlab.example.com/
    api_token: "{{ access_token }}"
    project: "my_group/my_project"
    hook_url: "https://my-ci-server.example.com/gitlab-hook"
    state: absent
- name: "Delete a hook by numeric project id"
  gitlab_hook:
    api_url: https://gitlab.example.com/
    api_token: "{{ access_token }}"
    project: 10
    hook_url: "https://my-ci-server.example.com/gitlab-hook"
    state: absent
'''
RETURN = '''
msg:
  description: Success or failure message
  returned: always