Get all the info about repositories from the configurations.

def _get_configured_repos(root=None):
    '''
    Get all the info about repositories from the configurations.
    '''

    repos = os.path.join(root, os.path.relpath(REPOS, os.path.sep)) if root else REPOS
    repos_cfg = configparser.ConfigParser()
    if os.path.exists(repos):
        repos_cfg.read([repos + '/' + fname for fname in os.listdir(repos) if fname.endswith(".repo")])
    else:
        log.warning('Repositories not found in %s', repos)

    return repos_cfg