OLMIS-4800, fix env variable due to Jenkins bug.
OLMIS-4800, fix env variable due to Jenkins bug.

Bug with setting PATH variable directly seems to be related to:  https://issues.jenkins-ci.org/browse/JENKINS-41339

OpenLMIS/openlmis-referencedata,OpenLMIS/openlmis-referencedata,OpenLMIS/openlmis-referencedata,OpenLMIS/openlmis-referencedata