Security update for bind

Open Source Vulnerabilities openSUSE-SU-2019:1533-1

This update for bind fixes the following issues: Security issues fixed: - CVE-2019-6465: Fixed an issue where controls for zone transfers may not be properly applied to Dynamically Loadable Zones (bsc#1126069). - CVE-2018-5745: Fixed a denial of service vulnerability if a trust anchor rolls over to an unsupported key algorithm when using managed-keys (bsc#1126068). - CVE-2018-5743: Fixed a denial of service vulnerability which could be caused by to many simultaneous TCP connections (bsc#1133185). - CVE-2018-5740: Fixed a denial of service vulnerability in the 'deny-answer-aliases' feature (bsc#1104129). This update was imported from the SUSE:SLE-15:Update update project.