<!--- Verify first that your issue is not already reported on GitHub -->
<!--- Also test if the latest release and devel branch are affected too -->
<!--- Complete *all* sections as described, this form is processed automatically -->

##### 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

def __init__(self, module, gitlab_instance):
        self._module = module
        self._gitlab = gitlab_instance
        self.hookObject = None
    '''
    @param project Project Object
    @param hook_url Url to call on event
    @param description Description of the group
    @param parent Parent group full path
    '''
    def createOrUpdateHook(self, project, hook_url, options):
        changed = False
        
        if self.hookObject is None:
            hook = self.createHook(project, {
                'url': hook_url,
                'push_events': options['push_events'],
                'issues_events': options['issues_events'],
                'merge_requests_events': options['merge_requests_events'],
                'tag_push_events': options['tag_push_events'],
                'note_events': options['note_events'],
                'job_events': options['job_events'],
                'pipeline_events': options['pipeline_events'],
                'wiki_page_events': options['wiki_page_events'],
                'enable_ssl_verification': options['enable_ssl_verification'],