Release for CentOS Linux 8 and CentOS Streams

CentOS Linux 8.0-1905 has been released. The releasenotes have more details. The CentOS project also introduces CentOSStream. "CentOS Stream is a rolling-release Linux distro thatexists as a midstream between the upstream development in Fedora Linux and thedownstream development for Red Hat Enterprise Linux (RHEL). It is acleared-path to contributing into future minor releases of RHEL whileinteracting with Red Hat and other open source developers. This pairsnicely with the existing contribution path in Fedora for future majorreleases of RHEL."