[SW-66] Warn if neither one of H2O_HOME an H2O_PYTHON_WHEEL properties is not set
[SW-66] Warn if neither one of H2O_HOME an H2O_PYTHON_WHEEL properties is not set

h2oai/sparkling-water,h2oai/sparkling-water,h2oai/sparkling-water,h2oai/sparkling-water