def get_base_host_names(hosts_info):
    """
    This function returns the base host names. These hosts are the original hosts of the application.
    Elascale scales hosts and with same base name that will be concatenated with '.' and the timestamp.
    So, if a host name does not contain '.', it means that host is the original host of the application.
    :param hosts_info:
    :return: the original host names
    """
    base_host_names = []
    for host in hosts_info:
        if not str(host['name']).__contains__('.'):
            base_host_names.append(host['name'])
    return base_host_names