Return variable content of file '/etc/os-release' as dict.

    Return-example (in case of an Ubuntu 16.04):
        {
            'name': 'Ubuntu',
            'version': '16.04.1 LTS (Xenial Xerus)',
            'version_id': '16.04',
            ...
        }

def _fetch_os_release_infos():
    '''Return variable content of file '/etc/os-release' as dict.

    Return-example (in case of an Ubuntu 16.04):
        {
            'name': 'Ubuntu',
            'version': '16.04.1 LTS (Xenial Xerus)',
            'version_id': '16.04',
            ...
        }
    '''
    os_release_dict = {}
    lines = []
    with fabric.api.hide('output'):
        lines = run('cat /etc/os-release', capture=True).split('\n')
    os_release_dict = dict([_line_2_pair(line.strip('\r'))
                            for line in lines
                            if line.strip() != ''])
    return os_release_dict