Downgrade logback version to fix SDM error. (#621)
Downgrade logback version to fix SDM error. (#621)


kiereleaseuser/droolsjbpm-build-bootstrap,porcelli-forks/droolsjbpm-build-bootstrap,porcelli-forks/droolsjbpm-build-bootstrap,kiereleaseuser/droolsjbpm-build-bootstrap,drdaveg/droolsjbpm-build-bootstrap,drdaveg/droolsjbpm-build-bootstrap,droolsjbpm/droolsjbpm-build-bootstrap,droolsjbpm/droolsjbpm-build-bootstrap