Retrieve mapping definition of index or index/type

    index
        Index for the mapping
    doc_type
        Name of the document type

    CLI example::

        salt myminion elasticsearch.mapping_get testindex user

def mapping_get(index, doc_type, hosts=None, profile=None):
    '''
    Retrieve mapping definition of index or index/type

    index
        Index for the mapping
    doc_type
        Name of the document type

    CLI example::

        salt myminion elasticsearch.mapping_get testindex user
    '''
    es = _get_instance(hosts, profile)

    try:
        return es.indices.get_mapping(index=index, doc_type=doc_type)
    except elasticsearch.exceptions.NotFoundError:
        return None
    except elasticsearch.TransportError as e:
        raise CommandExecutionError("Cannot retrieve mapping {0}, server returned code {1} with message {2}".format(index, e.status_code, e.error))