update squash ref to 543ff756f42c9e823eb90d033f4edc8b749f44fb
update squash ref to 543ff756f42c9e823eb90d033f4edc8b749f44fb

lsst-sqre/sandbox-jenkins-demo,lsst-sqre/sandbox-jenkins-demo,jhoblitt/sandbox-jenkins-demo,jhoblitt/sandbox-jenkins-demo