bump el7 kernel to 3.10.0-862.11.6.el7.x86_64
bump el7 kernel to 3.10.0-862.11.6.el7.x86_64

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