Security updates for Tuesday 4/2/2019

Security updates were issued by CentOS (Announcing the release of Gluster 6 on CentOS Linux 7 x86_64, Announcing the release of Gluster 6 on CentOS Linux 6 x86_64, CEBA-2019:0689 CentOS 6 tzdata BugFix Update, CESA-2019:0672 Critical CentOS 6 firefox Security Update, CESA-2019:0680 Important CentOS 6 thunderbird Security Update, CESA-2019:0671 Critical CentOS 7 firefox Security Update, CESA-2019:0681 Important CentOS 7 thunderbird Security Update, CESA-2019:0679 Important CentOS 7 libssh2 Security Update, CEBA-2019:0689 CentOS 7 tzdata BugFix Update)