Retrieves information about a registered nameserver. Returns the following
    information:

    - IP Address set for the nameserver
    - Domain name which was queried
    - A list of nameservers and their statuses

    sld
        SLD of the domain name

    tld
        TLD of the domain name

    nameserver
        Nameserver to retrieve

    CLI Example:

    .. code-block:: bash

        salt '*' namecheap_domains_ns.get_info sld tld nameserver

def get_info(sld, tld, nameserver):
    '''
    Retrieves information about a registered nameserver. Returns the following
    information:

    - IP Address set for the nameserver
    - Domain name which was queried
    - A list of nameservers and their statuses

    sld
        SLD of the domain name

    tld
        TLD of the domain name

    nameserver
        Nameserver to retrieve

    CLI Example:

    .. code-block:: bash

        salt '*' namecheap_domains_ns.get_info sld tld nameserver
    '''
    opts = salt.utils.namecheap.get_opts('namecheap.domains.ns.delete')
    opts['SLD'] = sld
    opts['TLD'] = tld
    opts['Nameserver'] = nameserver

    response_xml = salt.utils.namecheap.post_request(opts)
    if response_xml is None:
        return {}

    domainnsinforesult = response_xml.getElementsByTagName('DomainNSInfoResult')[0]

    return salt.utils.namecheap.xml_to_dict(domainnsinforesult)