added simple test file to verify connectivity to ES
added simple test file to verify connectivity to ES

darenr/art-dataset-nlp-experiments,darenr/MOMA-Art,darenr/MOMA-Art,darenr/art-dataset-nlp-experiments,darenr/art-dataset-nlp-experiments,darenr/MOMA-Art,darenr/art-dataset-nlp-experiments,darenr/MOMA-Art