added third variable: custom for update-versions-all.sh (#784)
added third variable: custom for update-versions-all.sh (#784)


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