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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

'''
EXAMPLES = '''
- name: "Adding a project deploy key"
  gitlab_deploy_key:
    api_url: https://gitlab.example.com/
    api_token: "{{ api_token }}"
    project: "my_group/my_project"
    title: "Jenkins CI"
    state: present
    key: "ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAiPWx6WM4lhHNedGfBpPJNPpZ7yKu+dnn1SJejgt4596k6YjzGGphH2TUxwKzxcKDKKezwkpfnxPkSMkuEspGRt/aZZ9w..."
- name: "Update the above deploy key to add push access"
  gitlab_deploy_key:
    api_url: https://gitlab.example.com/
    api_token: "{{ api_token }}"
    project: "my_group/my_project"
    title: "Jenkins CI"
    state: present
    can_push: yes
- name: "Remove the previous deploy key from the project"
  gitlab_deploy_key:
    api_url: https://gitlab.example.com/
    api_token: "{{ api_token }}"
    project: "my_group/my_project"
    state: absent
    key: "ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAIEAiPWx6WM4lhHNedGfBpPJNPpZ7yKu+dnn1SJejgt4596k6YjzGGphH2TUxwKzxcKDKKezwkpfnxPkSMkuEspGRt/aZZ9w..."
'''
RETURN = '''
msg:
  description: Success or failure message
  returned: always