Change-Id: I695ff7d6db7026a3b91771d4964f23d3151ef0aa
Create centos8-build similar to debian-stretch-build, as preparation for ttcn-3 tests on centos 8. Related: OS#4564 Change-Id: Ide1e88c92b7ac301f0ea8ca110c1b2eb43f9d5ad