JBTM-1156 Perform a more robust test for unset env var
JBTM-1156 Perform a more robust test for unset env var

tomjenkinson/narayana,gytis/narayana,jbosstm/narayana,tomjenkinson/narayana,gytis/narayana,jbosstm/narayana,gytis/narayana,mmusgrov/narayana,mmusgrov/narayana,jbosstm/narayana,tomjenkinson/narayana,gytis/narayana,jbosstm/narayana,gytis/narayana,tomjenkinson/narayana,mmusgrov/narayana,mmusgrov/narayana,gytis/narayana